Factor
n\left(m+n\right)^{2}
Evaluate
n\left(m+n\right)^{2}
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n\left(m^{2}+2mn+n^{2}\right)
Factor out n.
\left(m+n\right)^{2}
Consider m^{2}+2mn+n^{2}. Use the perfect square formula, a^{2}+2ab+b^{2}=\left(a+b\right)^{2}, where a=m and b=n.
n\left(m+n\right)^{2}
Rewrite the complete factored expression.
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