2 Answers

Prashant K · Answer 1 · 2018-05-08T16:12:15+0000

x^2+7x-18

Ask yourself:
What adds up to 7 but multiplies to -18?

In this case:
9 and -2 would be the answer.

9 * -2=-18
9-2=7

Factor form:
(x-2)(x+9)

Final answer:
(x-2)(x+9)

BrianS · Answer 2 · 2018-05-11T02:33:53+0000

factor(x^2+7x-18)
This question is simple
X^2+ 7x-18=0
So Factor is by crossing: (X+9)(X-2)
= X^2 -2X +9X-18
= X=2 or X=-9

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