SOLUTION: solve by the square root property 2(x+2)^2=16

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Question 454040: solve by the square root property 2(x+2)^2=16
Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!

2%28x%2B2%29%5E2=16...simplify
%282%2F2%29%28x%2B2%29%5E2=16%2F2
%28x%2B2%29%5E2=8
x%5E2%2B4x%2B4=8
x%5E2%2B4x%2B4-8=0
x%5E2%2B4x-4=0
x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+

x+=+%28-4+%2B-+sqrt%28+4%5E2-4%2A1%2A%28-4%29+%29%29%2F%282%2A1%29+

x+=+%28-4+%2B-+sqrt%28+16%2B16+%29%29%2F2+

x+=+%28-4+%2B-+sqrt%2832%29%29%2F2+

x+=+%28-4+%2B-+5.7%29%2F2+
solutions:
x+=+%28-4+%2B+5.7%29%2F2+
x+=+%281.7%29%2F2+
x+=+0.85+
or
x+=+%28-4+-+5.7%29%2F2+
x+=+%28-9.7%29%2F2+
x+=+-4.85+
+graph%28+500%2C+500%2C+-10%2C+10%2C+-10%2C+10%2C+x%5E2%2B4x-4%29+