Question 894552

I need to factor out the greatest common factor of..... 2 (m-1)-3 (m-1)^2+2 (m-1)^3 I have succeeded with other problems similar to it but this one has me completely stumped. Please help 
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If this is: {{{2(m - 1) - 3(m - 1)^2 + 2(m - 1)^3}}}, then GCF is: {{{m - 1}}}