Solve for x: (x+1)(x-2) = 0
Ax = 1, -2
Bx = -1, 2CORRECT
Cx = 2, 1
Dx = -1, -2
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Why the answer is B, and why the others tempt you.
Either factor = 0: x+1=0 → x=-1, or x-2=0 → x=2.
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