Solve for x
x=3
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x^{2}+8x+16-x^{2}=40
Subtract x^{2} from both sides.
8x+16=40
Combine x^{2} and -x^{2} to get 0.
8x=40-16
Subtract 16 from both sides.
8x=24
Subtract 16 from 40 to get 24.
x=\frac{24}{8}
Divide both sides by 8.
x=3
Divide 24 by 8 to get 3.
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