bae5ever
bae5ever
14-06-2017
Mathematics
contestada
Which is a factor of x^2+7x-18
Respuesta :
sierrahedgessh
sierrahedgessh
14-06-2017
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
Answer Link
firestarangel26
firestarangel26
14-06-2017
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)
Answer Link
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