If x = -1; 1 are the two roots of the equation x^2 +ax+b = 0; then find the values of a and b.
The Attempt at a Solution
(x-1) (x+1)= 0 ,,,,,, by expanding
x^2-1=0 ,,,,, so a=0 , b=-1
is it right or the question is asking for something eles,,,, ?