Respuesta :

sierrahedgessh
  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



firestarangel26
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)

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