SOLUTION: . Solve quadratic equation by taking square root. Solve: (2 x + 2)2 = 64

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Question 40336: . Solve quadratic equation by taking square root.
Solve: (2 x + 2)2 = 64
Answer by Earlsdon(6294) About Me  (Show Source):
You can put this solution on YOUR website!
Solve:
%282x%2B2%29%5E2+=+64 Take the square root of both sides.
2x%2B2+=+%2B8 or 2x%2B2+=+-8
2x%2B2+=+8 Subtract 2 from both sides.
2x+=+6 Divide both sides by 2.
x+=+3
2x%2B2+=+-8 Subtract 2 from both sides.
2x+=+-10 Divide both sides by 2.
x+=+-5
The roots are:
x = 3
x = -5