SOLUTION: (x+5)(x-3)=20

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Question 538071: (x+5)(x-3)=20
Answer by mananth(16946) About Me  (Show Source):
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(x+5)(x-3)=20
x(x-3)+5(x-3)=20
x^2-3x+5x-15=20
x^2+2x-15-20=0
x^2+2x-35=0
x^2+7x-5x-35=0
x(x+7)-5(x+7)=0
(x+7)(x-5)=0
x=-7 OR 5