Algebramedium · Past Paper

Factorize: x^2 - 13x + 42

A(x-6)(x-7)
B(x+6)(x+7)
C(x-14)(x+3)
D(x-42)(x-1)

✓ Correct Answer: A(x-6)(x-7)

-6 and -7 add up to -13 and multiply to 42.

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