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