SOLUTION: please help me solve for w. {{{w^2+2w-15=0}}}

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Question 620171: please help me solve for w.
Answer by ewatrrr(24785)   (Show Source): You can put this solution on YOUR website!
 
Hi,
solving for w.

factoring
(w+5)(w-3) = 0, w = 3 or w = -5
use FOIL to check the factoring is correct
F First terms w^2
O Outside terms -3w
I Inside terms 5w
L Last terms -15

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