Algebraeasy · Past Paper
Factorize x^2 - x - 20.
A(x-5)(x+4)
B(x+5)(x-4)
C(x-10)(x+2)
D(x-5)(x-4)
✓ Correct Answer: A — (x-5)(x+4)
Middle term splitting: -5x + 4x = -x and -5 * 4 = -20.
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