Evaluate
64\left(x+2\right)^{2}
Expand
64x^{2}+256x+256
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\left(16+8x\right)^{2}
Multiply 16+8x and 16+8x to get \left(16+8x\right)^{2}.
256+256x+64x^{2}
Use binomial theorem \left(a+b\right)^{2}=a^{2}+2ab+b^{2} to expand \left(16+8x\right)^{2}.
\left(16+8x\right)^{2}
Multiply 16+8x and 16+8x to get \left(16+8x\right)^{2}.
256+256x+64x^{2}
Use binomial theorem \left(a+b\right)^{2}=a^{2}+2ab+b^{2} to expand \left(16+8x\right)^{2}.
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