SOLUTION: (x + 7)(x - 10) = 60 Solve by factoring and using the principle of zero products

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Question 302478: (x + 7)(x - 10) = 60
Solve by factoring and using the principle of zero products
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
first use foil to multiply it out
(x + 7)(x - 10) = 60
x^2-3x-70=60
subtract 60
x^2-3x-130=0
find factors of -130 that add to -3
-13 and 10
(x-13)*(x+10)=0
x=13 x=-10