Factor
\frac{n^{2}\left(56+7n^{2}+12mn-42m^{2}\right)}{42}
Evaluate
\frac{n^{2}\left(56+7n^{2}+12mn-42m^{2}\right)}{42}
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\frac{12mn^{3}-42m^{2}n^{2}+7n^{4}+56n^{2}}{42}
Factor out \frac{1}{42}.
n^{2}\left(12mn-42m^{2}+7n^{2}+56\right)
Consider 12mn^{3}-42m^{2}n^{2}+7n^{4}+56n^{2}. Factor out n^{2}.
\frac{n^{2}\left(12mn-42m^{2}+7n^{2}+56\right)}{42}
Rewrite the complete factored expression.
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