Evaluate
\left(x+8\right)^{2}-5
Expand
x^{2}+16x+59
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\left(-x\right)^{2}-16\left(-x\right)+64-5
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(-x-8\right)^{2}.
x^{2}-16\left(-x\right)+64-5
Calculate -x to the power of 2 and get x^{2}.
x^{2}+16x+64-5
Multiply -16 and -1 to get 16.
x^{2}+16x+59
Subtract 5 from 64 to get 59.
\left(-x\right)^{2}-16\left(-x\right)+64-5
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(-x-8\right)^{2}.
x^{2}-16\left(-x\right)+64-5
Calculate -x to the power of 2 and get x^{2}.
x^{2}+16x+64-5
Multiply -16 and -1 to get 16.
x^{2}+16x+59
Subtract 5 from 64 to get 59.
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