I want to enter a multiple lines into a display formula and center each line by it's own (I don't won't the lines to aligned together).
The equivalent tex input for what i ask is:
$$\displaylines{(x+a)^2 = x^2+2ax+a^2\cr
(x+a)(x-a) = x^2-a^2\cr}$$
Can someone please explain to me how do I do it in LyX?
Regards,
Guy
