Evaluate
16\left(b+1\right)^{2}
Expand
16b^{2}+32b+16
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\left(4+4b\right)^{2}
Add 3 and 1 to get 4.
16+32b+16b^{2}
Use binomial theorem \left(p+q\right)^{2}=p^{2}+2pq+q^{2} to expand \left(4+4b\right)^{2}.
\left(4+4b\right)^{2}
Add 3 and 1 to get 4.
16+32b+16b^{2}
Use binomial theorem \left(p+q\right)^{2}=p^{2}+2pq+q^{2} to expand \left(4+4b\right)^{2}.
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