Evaluate
\left(x+7\right)^{2}
Expand
x^{2}+14x+49
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\left(x+7\right)^{2}
Multiply x+7 and x+7 to get \left(x+7\right)^{2}.
x^{2}+14x+49
Use binomial theorem \left(a+b\right)^{2}=a^{2}+2ab+b^{2} to expand \left(x+7\right)^{2}.
\left(x+7\right)^{2}
Multiply x+7 and x+7 to get \left(x+7\right)^{2}.
x^{2}+14x+49
Use binomial theorem \left(a+b\right)^{2}=a^{2}+2ab+b^{2} to expand \left(x+7\right)^{2}.
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