Evaluate
\left(n+1\right)^{2}+5
Expand
n^{2}+2n+6
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n^{2}+2n+1+5
Use binomial theorem \left(a+b\right)^{2}=a^{2}+2ab+b^{2} to expand \left(n+1\right)^{2}.
n^{2}+2n+6
Add 1 and 5 to get 6.
n^{2}+2n+1+5
Use binomial theorem \left(a+b\right)^{2}=a^{2}+2ab+b^{2} to expand \left(n+1\right)^{2}.
n^{2}+2n+6
Add 1 and 5 to get 6.
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