Factor the expression. x^2 – x – 42 a. (x 7)(x – 6) b. (x – 7)(x 6) c. (x – 7)(x

asked May 3, 2017 106k views

1 vote

Factor the expression. x^2 – x – 42

a. (x 7)(x – 6)

b. (x – 7)(x 6)

c. (x – 7)(x – 6)

d. (x 7)(x 6)

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6 votes

x^2 - x - 42 = x^2 - 6x + 7x - 42 = x( x - 6) + 7(x - 6) = (x-6)(x+7);
The correct answer is a.

Naureen answered May 10, 2017

8.6k points

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