SOLUTION: quadratic equation: square root 8(x+2)^2=648

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Question 959370: quadratic equation: square root
8(x+2)^2=648
Answer by macston(5194) About Me  (Show Source):
You can put this solution on YOUR website!
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8%28x%2B2%29%5E2=648 Divide each side by 8
%28x%2B2%29%5E2=81 Find the square root of each side.
x%2B2=9 or x%2B2=-9
x=7 or x=-11