Evaluate
16\left(a+2b\right)^{2}
Expand
16a^{2}+64ab+64b^{2}
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16a^{2}+64ab+64b^{2}
Use binomial theorem \left(p+q\right)^{2}=p^{2}+2pq+q^{2} to expand \left(4a+8b\right)^{2}.
16a^{2}+64ab+64b^{2}
Use binomial theorem \left(p+q\right)^{2}=p^{2}+2pq+q^{2} to expand \left(4a+8b\right)^{2}.
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