Algebrahard · Past Paper
Factorize: x^3 - 7x - 6
A(x+1)(x+2)(x-3)
B(x-1)(x+2)(x+3)
C(x+1)(x-2)(x-3)
D(x-1)(x-2)(x-3)
✓ Correct Answer: A — (x+1)(x+2)(x-3)
Using factor theorem, x=-1 is a root. Divide x^3-7x-6 by (x+1) to get x^2-x-6, which factors to (x-3)(x+2).
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