Evaluate
\left(2x+h\right)^{2}
Expand
4x^{2}+4hx+h^{2}
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\left(2x+h\right)^{2}
Combine x and x to get 2x.
4x^{2}+4xh+h^{2}
Use binomial theorem \left(a+b\right)^{2}=a^{2}+2ab+b^{2} to expand \left(2x+h\right)^{2}.
\left(2x+h\right)^{2}
Combine x and x to get 2x.
4x^{2}+4xh+h^{2}
Use binomial theorem \left(a+b\right)^{2}=a^{2}+2ab+b^{2} to expand \left(2x+h\right)^{2}.
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