[Jprogramming] quadratic equation primer example gives syntax error

[djmintz]

Does anyone know why I get this syntax error? 




rq =: 3 : 0 
'a b c' =: y. 
((-b) (+,-) %: (b^2)-4*a*c) % (2*a) 
) 
|syntax error 
| ) 

Thank you, 

Don Mintz 
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