Expand
8r^{3}+12r^{2}+6r+1
Evaluate
\left(2r+1\right)^{3}
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8r^{3}+12r^{2}+6r+1
Use binomial theorem \left(a+b\right)^{3}=a^{3}+3a^{2}b+3ab^{2}+b^{3} to expand \left(2r+1\right)^{3}.
8r^{3}+12r^{2}+6r+1
Use binomial theorem \left(a+b\right)^{3}=a^{3}+3a^{2}b+3ab^{2}+b^{3} to expand \left(2r+1\right)^{3}.
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