SOLUTION: how do i solve z^2+2z-15=0?

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Question 381307: how do i solve z^2+2z-15=0?
Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
z^2+2z-15=0
(z+5)(z-3)=0
z=-5, z=3
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Ed