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Find the factors of (x2 + x - 42).

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Find the factors of (x2 + x - 42).
1). (x + 14) (x - 3)
2). (x + 6) (x - 7)
3). (x - 6) (x + 7)
4). (x - 14) (x + 3)


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1 answers

2 vote
Answered by on | Votes 2 |

(x2 + x - 42)

⇒ x2 + 7x - 6x - 42

⇒ x(x + 7) - 6(x + 7)

⇒ (x + 7)(x - 6)

∴ Factors of (x2 + x - 42) = (x + 7)(x - 6)

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