m^2 6n - 9n2 - 2m = (m - 3n)(m + 3n - 2)
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m2 - 4mn - 12n2 = m2 - 6mn + 2mn - 12n2 = m(m - 6n) + 2n(m - 6n) = (m + 2n)(m - 6n)
(m-2)/(m+2) * m/(m-1) = [(m-2)*m]/[(m+2)*(m-1)] = (m2 - 2m)/m2 + m - 2)
(81 - m2) = (9 - m)(9 + m)
2m4(m2-15m+18) i hope this is right! srry if its not i just did it for hw
About 167.2 m2