What is the value of x?
(1) x^3 - x^2 = 0
(2) (-x)^2 = -x^2
In this case, it is better to simplify. This is a "value" question, so our answer depends on finding the exact value of x.
=> either x=0 or x=1
(2)(-x)^2 = -x^2
Simplifying left hand side,(-x)^2 = (-1*x)^2 = (-1)^2 * (x)^2 = x^2
Thus the original expression is reduced to x^2=-x^2
, which can only happen when x=0.
Thus the answer is B.