Evaluate
5\left(3b+4\right)^{2}
Expand
45b^{2}+120b+80
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5\left(16+24b+9b^{2}\right)
Use binomial theorem \left(p+q\right)^{2}=p^{2}+2pq+q^{2} to expand \left(4+3b\right)^{2}.
80+120b+45b^{2}
Use the distributive property to multiply 5 by 16+24b+9b^{2}.
5\left(16+24b+9b^{2}\right)
Use binomial theorem \left(p+q\right)^{2}=p^{2}+2pq+q^{2} to expand \left(4+3b\right)^{2}.
80+120b+45b^{2}
Use the distributive property to multiply 5 by 16+24b+9b^{2}.
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