Solve x^4  12x  5 = 0 given that 1 + 2i is a root. I’ve used synthetic division to get the answers x = 1 +/ 2i , 1 +/ sqrt 2 I’ve having trouble checking the answers
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Math
1. What is the simplified form of the expression? 2x2 + 4y + 3x2 – 2y + 3y (1 point) 5x4 + 5y2 5x2y + 5x2y 5x2 + 5y 10x2y 2. Simplify the following expression: 2(6x + 18) (1 point) –12x + 36 8x + 20 6x + 36 12x + 36 3. What is the product? 4 • (–5)

Algebra 1
1) what is the simplified form of (x2)(2x+3)? Use the distributive property. A) 2x^2x6 B) 2x^26 C)2x^27x6 D) 2x^2 +x6**** 2) what is the simplified form of (3x+2)(4x3) use a table. A)12x^2+18x+6 B) 12x^2+x6 C) 12x^2+18x6**** D)12x^2x6 3) what

Algebra
Use the quadratic formula to solve the equation. Give exact answers: 2x^2 1 = 6x. The choices are: a) 3 + square root(7)/2, 3  square root(7)/2 b) 3 + square root(11)/2, 3  square root(11)/2 c) 3 + square root(7)/2, 3  square root(7)/2 d) 3 + square

Calculus!! HELP!!
1) The sides of the triangle shown increase in such a way that (dz/dt=1) and (dx/dt=(3dy/dx)) At the instant when x = 12 and y = 5, what is the value of dx/dt? 2) Let f(x) = x^3 − 4. Which of these is the equation for the normal line to this curve at the

Algebra II
Solve x^4  12x  5 = 0 given that 1 + 2i is a root. I’ve used synthetic division to get the answers x = 1 +/ 2i , 1 +/ sqrt 2 I’ve having trouble checking the answers though because of that imaginary number. How can I check these kind of problems?

Algebra 1
A square painting is surrounded by a frame. the outside edges of the frame are x inches in length, and the frame is 3 inches thick. What is the total area of the frame? A)12x+36 B)12x36 C)x^2+12x+36 D)x^212x36 Is it C or D?

Calculus
The marginal cost of a product is modeled by dC/dx =12/Cube root (12x+5) where x is the number of units. When x = 13, C = 160. (a) Find the cost function. (Round your constant term to two decimal places.) C= Ans 3/2(12x+5)^2/3 +115.61 ???? (b) Find the

Algebra. Please check my answers
Evaluate a/b+c^d for a=6,b=3,c=4 and d=5 A.42*** B.18 C.82 D.360 What is the simplified form of the expression ? (12x8y) A.12x+8y B.12x8y***** C.12x+8y D.12x8y

Trigonometry
I'm trying to find the cosecant of 11 pi/6. The answer is 2, but I'm not sure where this came from. I thought You would flip the sine value which was sq. root of 3/2, making it 2/sq. root of three, which would then become sq. root of 6 over 3 or sq. root

Math simplifying mixed radicals
Please help me simplify these following mixed radicals:: and show me how you did it cause I need to learn : I don't know how to type a square root sign so I just wrote square root and the numbers infront of the square root are supposed to be multiplied. 2

algebra
(12x8y) i am a little confused by this. would the negative make 12x into 12x, and then 8y becomes +8y instead? would it be 12x+8y

Math
For the equation 2x 3  11x 2 + 12x + 9 = 0, the root 3 has a multiplicity of _____.

math
Which linear equation represents a nonproportional relationship? A) y = 0.2x B) y = 12x C) y = −12x D) y = −12x + 5 i don't know how to do this or what it means, please help me

Algebra 2
Simplify Each Expression. Rationalize all denominators. Assume that all variables are positive. 3 times the square root of 11x^3y (the three is an exponet) over 2 times the square root of 12x^4y (the 4 is an exponet)

math
solve the equation below algebraically and express the result in simplest radical form 13/x=10x I did 13/x=10x multiplied each side by x and then subtracted 13 to get 0=13(10xx^2) x^210x+13=0 x=(10+/ square root of 10052)/2 x=(10=/ 4square root 3)

Algebra
To solve 9x^212x+4=49 by using the Square Root Property, you would first rewrite the equation was as A. 9x^212x45=0 B.(3x2)^2=+/49 C.(3x2)^2=7 D.(3x^2)^2=49

Calculus
Q.a.Find the stationary points on the graph of y=12x+3x^22x^3 and sketch the curve. b.How does your sketch show that the equation 12x+3x^22x^3 =0 has exactly three real roots. c.Use your graph to show that the eequation 12x+3x^22x^3 = 5 also has

Algebra
I have some problems that I am having trouble with and I have some that need checking please. Thanks! Solve the equation. 4. (x+7/4)=2(x1/6) Find all the value(s) of x that make thedenominator(s) zero. Then solve the equation. 6. (x8/2x) +5= (x+6/x)

Algebra
I think that the goal is to get rid of the 5th root in this case. I know that I have to make whatever is under or in the root in this case the number is X equal some number to the fifth power. I am supposed to use the rule a^(m/n)= n (the nroot) (don't

Algebra
Rationalize each expression by building perfect nth root factors for each denominator. Assume all variables represent positive quantities. I don’t understand how to compute these. Also I don’t have the square root sign so I typed it out where it would

PreCalculus
Solve 0 = 3x^2 + 5x 1 by completing the square. Express your answer as exact roots. 3(x^2 + 5/3 + 25/36) = 1 (x+ 5/6)^2 = 37/36 sq root( x + 5/6)^2 = sq root (37/36) x + 5/6 = + sq root 37/6 x = 5/6 + square root 37 /6

Algebra
what is the square root of 12x^3y^2

Physics
The kinetic energy of a proton is half its internal energy. What is the proton's speed? Kinetic energy is (Yu  1) (mp) (c)^2 = 1/2 (mp) (c)^2 Yu = 1.5 Yu = 1/(square root) 1  (u/c)^2 1/(square root) 1  (u/c)^2 = 1.5 u= 0.745c How do I solve for u? I'm

Math simplifying mixed radicals
Please help me simplify these following mixed radicals:: and show me how you did it cause I need to learn : I don't know how to type a square root sign so I just wrote square root: 2 square root 48 3 square root 81 6 square root 12 3 square root 32 2

Radicals3
State the restrictions on the variables and then simplify each of the following expressions. A.) X root 12x^4 The answe is 2x^3 root 3 but I don't know how to get the answer it. B.) (3x root x^2)(2 root x^5) The answer is 6x^4 root X but I don't know how

math
How do you solve this equation using the elimination method 12x – 20y = 64 12x + 9y = 6

Geometry
mx^2+12x+9m=0. for what values of m will the equation have one repeated root? I can't remember how to calculate double root values

math
Solve for x: [Sixth root of 27]+[cube root of x] = 6/(3[square root of 3]

College Algebra
I need some help with a handful of questions. I need to see the steps on how to get to the final answers. I would also appreciate if you can explain how you got to those steps. Rationalize each expression by building perfect nth root factors for each

Math
Just need some help... Directions: Multiply or raise to the power as indicated... Then simplify the result. Assume all variables represent positive numbers. 1. 5(square root of 6) times twothirds(square root of 15)= 3 onethird (square root of 90)= (This

Math
Which expression is the expanded form of p(x)=4(x−7)(2x2+3)? 8x3−56x2+12x−84 8x3+56x2−12x−84 32x3−224x2+48x−336 −48x2+12x−84 I believe it is 8x3−56x2+12x−84 if I am wrong can you explain

math
I HAVE THESE ANSWERS FOR THE PROBLEMS. COULD YOU DOUBLE CHECK PLEASE, THIS IS A PRACTICE QUIZ WHICH ISN'T A GRADE IT JUST HELPS ME GET READY FOR THE TEST. 1) a 2) b 3) d 4) a 5) d 1. Solve x^3 + 6x^2 + 13x + 10 = 0. a) –2 + 2i, –2 –2i, –2 b) 2 + i,

algebra
1.)correct 2.)wrong> the first term is wrong 4(3a^2)^2 = 36a^4 3.) not sure on this one 4.) wrong>  square root of six is not a solution Hope this Helps! 1)find p(3)if p(x)=4x^35x^2+7x10 =184 2)If r(x)=4x^23x+7,find r(3a^2) =12a^49a^2+7

Math
f(x) = 3x^2 , g(x) = 3x1, and m(x) = 4x Find and simplify the composition function g(m(f(x))) answers i got which were wrong 3x1(12x^3) 36x^412x^3 Maybe i am putting the information in incorrectly.. Should it look like this (3x^2(4x(3x^2))) then solve?

algebra
1)Write the expression 9n^6+7n^36 in quadratic form,if possible A.9(n^3)^3+7n^36 B.9(n^2)^3+7(n^2)6 C.9(n^3)^2+7(n^3)6 D.not possible I'm thinking C on this one but im not sure 2)solve b^4+2b^224=0 A.2,square root of 6,square root of 6,2 B.square

algebra 2
Add(1/12X^4+6/7X^3+3/8X^2+5)+ (7/12X^4+5/8X^25). "Please help me solve this"

Algebra 2
Add(1/12X^4+6/7X^3+3/8X^2+5)+ (7/12X^4+5/8X^25). "Please help me solve this"

Derivatives
What is the fourth derivative of f(x)= e^x^2. I got f''(x)=2e^x^2 + 4x^2e^x^2 i need some help on find f''''(x) You have f(x) = ex2 then f'(x) = 2x*ex2 = 2x*f(x) f"(x) = (4x2  2))ex2 = f(x)*(4x2  2)) f"'(x)= f'(x)*(4x2  2)) + f(x)(8x) =

College Algebra
I need some help with a handful of questions. I need to see the steps on how to get to the final answers. I would also appreciate if you can explain how you got to those steps. Rationalize each expression by building perfect nth root factors for each

College Algebra help please
I need some help with a handful of questions. I need to see the steps on how to get to the final answers. I would also appreciate if you can explain how you got to those steps. Rationalize each expression by building perfect nth root factors for each

Algebra Word problem
I don't know how to put in a square root symbol here so know that it is over h. The equation D=1.2 square root h gives the distance D in miles that a person can see to the horizon from a height h in feet. Solve for h. Do I find the square root of 1.2?

Algebra
How do you work square root problems when there is a number outside the radical that needs to be divided out. Example: 2(square root of 5x1)=3(square root of 2x+4). How can you get both of the radicals by themselves in order to solve the equation?

geometry
Find the coordinates of the center and the radius of a circle with and equation of: a. x^2 + 2root7x +7 + (Yroot 11)^2 =11 b. x^2 12x + 84 =y^2 + 16y

calc
What is dy/dx of y=12/12Xy^3 ???? Any idea anyone??? y=12/12Xy^3 I assume you mean... y=12/(12Xy^3) 12Xyy^4=12 12x dy/dx + 12y 4y^3 dy/dx=0 dy/dx (12x 4y^3)=12y solve for dy/dx

Algebra
Solve 2+ the square root of 4x=x what is your question? ok lets start by arranging everything so its easier to solve.. u want to put the square root(4x)on one side of the equation and the 2 on the other side... square root(4x) = x  2; now..to get rid

help...solving a polynomial....algebra
solve this please....help me....12x(squared)+7x10 Do you wish to factor this trinomial? If so, the factors are: (4x + 5)(3x  2) You can use the FOIL method to check. If this is supposed to be an equation: 12x^2 + 7x  10 = 0 ...then set each factor equal

Algebra problem
Multiply (x5/4x+8)*(12x^2+32x+16) A. (3x+2)/4(x5) B. (x5)(3x+2)/4 C. (x5)(3x+3) D. (x5)(12x+8) Please help me solve this problem because all I get is 3x^213x10 (which isn't a choice.)

Algebra
Set up the Discriminant 2x^2+12x+10 A) (square root of) 1224(2)(10) B) (square root of) 224(12)(10) C) (square root of) 124(2)(10) D) 1224(2)(10) Can someone help, I am really confused.

math
determine the area of triangle abc when side ab= square root of x, side bc= square root of x, and side ca= the square root of the square root of x. So how do I solve it. How do I add the square root of x + the square root of x + the square root of the

Algebra
2(3x  7) + 4 (3 x + 2) = 6 (5 x + 9 ) + 3 how will solve it? well you first multiply it out: 6x14+12x+8=30x+54+3 you combine like terms 18x6=30x+57 12x=63 x=63/12

precalc
For the equation 2x 3  11x 2 + 12x + 9 = 0, the root 3 has a multiplicity of _____.

algebra
5x 3 = 11 + 12x combine like figures add 3 to both sides to remove the 3 5x= 14+ 12x Now I get confused. If I remove the 12x I have to subtract 12x from 5x which gives me an answer of 7x=14 would the correct answer thus be x= 2? thanks

Algebra
Please read and then help me! (x^(3/5))  divide x ^ (1/5) I know the problem then needs to look like this: (x^(3/5))(x^(1/5)) (multiply the two above) Then it needs to look like this: (I can't write it though, so I'll tell you) The 5th root

Algebra
What is the vertex form of the equation? y = x^2+12x4 My work: (x^2 + 12x)4 (x^2 + 12x + 36)4 + 36 Y= (x+36)^2 + 32 Is this correct? I am not sure if I did this right or not? Thank you!

math: polynomials
Please help me with these three problems! 1. solve for x: 3x + 5x^(1/2)  28 = 0 2. solve for x: square root(2x5)  square root(x2) = 2 3. Find all values so that polynomial: ax^2 + 5x + 2 has two distinct real roots.

math
2.)If f(x)=3x,g(x)=x3,and h(x)= the square root of x, find (fogox)(X). I really didn't get this will someone please show me how to do it? This I what I did to solve for it: 3(x3) 3(he square root of 253 3(53) 159=6 Ok here is another way I solved for

math
What does it mean to have the sqaure root of 5 with a 2 in front of it? How do you figure it out? 2 sqrt 5 is two times the square root of 5. It depends where the 2 is placed wrt the square root symbol. If it is on the same line as the square root symbol,

Algebra
I'm not sure how to factor 3x^312x^2+3x. I tried separatring the 3x so that 3x(x+1)(x4, but I got 3x^3+12x^23x^2+12x. Can you show me where I went wrong and how to properly factor this? Is there a general rule or tip for this sort of factoring with a

Math
Solve. (10x^3+30x20) / (5x+5) A) 2x^22x+4 B) 2x^22x4 C) 2x^2+2x+4 D) 2x^2+2x4*** Simplfy x/6xx^2 A) 1/6x; where x=0,6 ***** B) 1/6x ; where x= 6 C) 1/6x ; where x = 0 D) 1/6 Simplfy x2/x^2+4x12 A) 1/x+6; where x=6 B) 1/x+6; where x= 6,2***

Advanced Algebra
Can you please explain to me how I can solve these problems? (3^ square root of3) ^square root of 3 (x^ square root of 2) ^square root of 7 5^(2)(square root of 3) • 5^(4)(square root of 3) x^(3)(pi) / x^(pi)

Math
What are the solution sets of the following 3 problems,the square root of x squared + 3x = x3, the square root of 3x + 10 = x + 4 and finally the square root of 8x  2 = the square root of 2x? Help much appriciated. I will one as an example. sqrt(3x + 10)

Math
Precalc stuff.. square root of z1= square root of z +6 are you solving for z? square both sides then solve for z. that's my problem, i'm not sure how to solve for z. i need a process. it's not in my book or anything.

math
Could you please solve so I can double check my answers for the practice quiz? Thank You!! 1. Solve x^3 + 6x^2 + 13x + 10 = 0. a) –2 + 2i, –2 –2i, –2 b) 2 + i, 2 – i, –2 c) –2 + i, –2 – i, –2 d) 2 + 2i, 2 – 2i, –2 2. Find the

algebra2
1/3  5/6 = 1/X SOLVE 1/3  5/6 = 1/X Let's remove the denominators by multiplying by 12X 12X*(1/3)  12X*(5/6) = 12X*(1/X) Clear the fractions. 4X  10X = 12 6X=12 multipy by 1 6X=12 Divide both sides by 6 6X/6 = 12/6 X = 2 Check my work.

Algebra 2
Replace each of the question marks with a value that will make the polynomial a perfect square trinomial. 1. 4x^2+12x+? 2. ?+90x+81 Could someone show me how to solve these? Take the first: factor out the 4 4x^2+12x+? 4( x^2 + 3x + ?) take half the center

math
Solve the system:4x+2y13=0 and 3x=5y+26 by elimination. 3 (4x+2y13=0) 12x+6y26=0 4 (3x=5y+26) 12x=20y+104 I need to subtract since the signs are the same: 12x+6y26=0 Since they don't match up, I'm having trouble subtracting them. I'm not sure what to

math
My problem I have involves a method that requires using the quadratic equations that comes from India. Here the problem that I have to solve : x to the second power plus 12x minus 64 equals 0 I need someone to walk me through each step to arrived to the

Algebra
I had to solve the function g of f where f is x^2+1 and g is sq. root of x. I wrote this out as the sq. root of x^2+1. The ^2 and the sq. root canceled each other out, so I was left with x + sq. root of 1. But my book got sq. root of x^2+1. Was the further

Pre Algebra
Please help me with some problems. Thank you! Solve the equation by square root property. 3. 2x^2 = 26 I don't understand how to solve this problem. Solve the equation using the quadratic formula. 7. 7x^2=8x 2 This is what I got x= 8 or+ square root

Algebra
I had to solve 2x^2x1 using the quad. formula. I got it down to (1 +/ the square root of neg. 8) divided by four. I broke the sq. of neg. 8 into the sq. root of 4 and the sq. root of 2. But my question is could it also be the sq. root of 4 and the sq.

Roots and Precal
Find the roots of the function f(x)= x^2 +2x+2 a)1 + sq root of 2 and 1  sq root of 2 b) 1 + i and 1  i c)1 2i sq root of 2 and 12i sq root of 2 d)1 +2i and 12i The i's are in italics but I can't .make them in italic here for some reason

PreCalculus
Solve. Express your answer as exact roots. (s+6)^2 = 3/4 Sq root (s+6)^2 = +sq root 3/4 (s+6) = sq root 3/ 2 s = 6 + sq root 3  2 (The answer according to the textbook is (12 + sq root 3)/2. What error have I made?) Thank you

Math
1) Solve equation 3r+5 _____ + 2 = 2r to find the value of r? 2 A. 2 1/7 B. 3 2/3 C. 15 D. 10 2) which is these is a rational number. A. Sq root of 14 B. sq root of 9 C. sq root of 34 D. Sq root of 72

Algebra
There are 5 quadratics below. Four of them have two distinct roots each. The other has only one distinct root; find the value of that root. 4x^2+16x9 2x^2+80x+400 x^26x9 4x^212x+9 x^2+14x+49

algebra
There are 5 quadratics below. Four of them have two distinct roots each. The other has only one distinct root; find the value of that root. 4x^2 +16x  9 2x^2 + 80x + 400 x^2  6x  9 4x^2  12x + 9 x^2 + 14x + 49

Polynomial Fucntion Problem
Could you help me with the following problem, I don't understand how to do it. Am I suppose to use the linear factorization theorem? Find an nth degree polynomial function with real coefficients satisfying the given conditions. 1. n=3; 3 and i are zeros;

Algebra
Solve for y in terms of x . Determine if y is a function of x . If it is, rewrite using notation and determine the domain. xsquared+12x3y+9=0 is it xsquared + 12x +9=3y f(x)=xsquared + 12x + 6=y ?

college algebra
Solve: sq root of (x+1) minus 3 = sq root of (x+4) when I solve it I get zero, but when I plug it back in only one answer works. do both have to work for it to have a solution?

algebra 2
Add(1/12X^4+6/7X^3+3/8X^2+5)+ (7/12X^4+5/8X^25). "Please help me solve this"

algebra1
could you walkthrough the steps to solving this problem because I am stuck; 3x5(3x7)=2(x+9)+45 Let me know if you have a question in any step. 3x5(3x7)=2(x+9)+45 3x15x+35= 2x+18+45 12x+35 = 2x+63 35 35 12x= 2x +6335 12x= 2x +28 2x 2x 12x2x

cubic function
I am absolutly stumped at how to solve this. I know for squared functions you take the square root of both sides to solve for x but what about if one side is cubed. I know you would have to take the cubed root of the function but how do you do this on a

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Rationalize the denominator The square root of: (12x^5y^2z^3)/9x^3y^3z

calculus
Which of the following is a representation of the domain of the expression: h(x) = 12x + 3 / 2 square root of x

algebra
24x^412x^3+48x^2/4x 24x^412x^3+12(1) 24x^412x^3+(12x) 2x^412x^312x check this problem for me please

Math
Posted by NEED HELP on Monday, September 29, 2014 at 9:12pm. Have three problems and I'm really confused how to solve/simplify 1. 4/3+square root of 5 2. 4/4+4square root of 2 3. 1/1+ square root of 2

maths surds please help and explain
Simplify A.1/root a +2 b.root 18/25 c.root a x cubed root a d.root x + 2 root y/root x2 root y e.root5 x root72 /root 3

Algebra
Can someone please check my work for me. Q: Plot the graph of the equations 2x  3y = 5 and 4x  6y = 21 and interpret the result. A: 6(2x ¨C 3y = 5) = 12x ¨C 18y = 30 3(4x  6y = 21) = 12x  18y = 63 12x ¨C 18y = 30 + 12x  18y = 63 0 ¡Ù 93

Math
Rationalize the denominator. Assume that all expressions under radicals represent positive numbers. The square root of 3y^4 to the third root divided by the square root of 15x^4 to the third root. Here is what I have so far: I multiplied. The square root

Algebra 1
Solve for x sq root 2x+3= sq root 6x1 a1 b2 c3 dsq root 6 My answer is a = 1

algebra 1
This problem has a fraction in it. Solve: square root of y =(numerator) 5+square root of 2. (Denominator)2 25.5+5square root of 2?

math
solve algebraically and check y=8x+3 y=4x21 8x+3=4x21 +4x +4x 12x+3=21 3 3 12x=24 x=2 y=8x+3 y=8(2)+3 y=16+3 y=13 (2,13) check y=8x+3 13=8(2)+3 13=16+3 13=13 y=4x21 13=4(2)21 13=821 so 13=13 these check, so did I do this

Algebra
Can you explain how to find the solution of 3x^22x+5, using the quadratic formula? I got it down to (2 +/ sq. root of 56)/6. But my book then reduces that to (2 +/ 2 times the sq. root of 14i)/6. But I think in place of the 2 and the sq. root of 14 it

math
2.)If f(x)=3x,g(x)=x3,and h(x)= the square root of x, find (fogox)(X). I really didn't get this will someone please show me how to do it? This I what I did to solve for it: 3(x3) 3(he square root of 253 3(53) 159=6 Ok here is another way I solved for

Algebra
If a is a real number and a cubic equation f(x)=x^3−12x^2+(a+20)x−2a has a repeated root, what is the sum of all the possible values of a ?

Algebra
Have three problems and I'm really confused how to solve/simplify 1. 4/3+square root of 5 2. 4/4+4square root of 2 3. 1/1+ square root of 2

Algebra
What is the domain of the function f(x) = square root of (12x24) I don't get this concept and I have a ton of these problemscan you please explain how to get it Thank you

Calculus
Find two nonintersecting intervals where f(x) +12x^4 + 50x^3 + 80x^2100 has at least one root. Justify your answer.

Math
Hi again, I don't know how to solve this problem. cube root of(cube roof of(x1)1) It would be ninth root of 1/(x1) Thank you. Do you think you can explain to me how did you solve it? what are your feelings about math, rate your math anxiety, and

Algebra: Steve
I already asked this question,I just wanted to clarify the answer. Problem: The polynomial f(x) has degree 3. If f(1)=15, f(0)=0, f(1)=5, f(2)=12, then what are the xintercepts of the graph of f? Steve: clearly, f(0) = 0 so, f(x) = ax^3+bx^2+cx =

math
how do you solve this can you do this with the steps do I an understand them,please. 3 outside the square root like a cube. (square root start) 64x^6/27 (square root end)