1.2m^3-18m
2m*(m^2-9)
2m*(m-3)(m+3)
2.7m^2+14mn+7n^2
7(m^2+2mn+n^2)
7(m+n)^2
3.6n^3+6m^3
6(n^3+m^3)
6(n+m)(n^2-mn+m^2)
4.16m^4-81n^4
(4m^2-9n^2)(4m^2+9n^2)
(2m-3n)(2m+3n)(4m^2+9n^2)
1.2m^3-18m
2m*(m^2-9)
2m*(m-3)(m+3)
2.7m^2+14mn+7n^2
7(m^2+2mn+n^2)
7(m+n)^2
3.6n^3+6m^3
6(n^3+m^3)
6(n+m)(n^2-mn+m^2)
4.16m^4-81n^4
(4m^2-9n^2)(4m^2+9n^2)
(2m-3n)(2m+3n)(4m^2+9n^2)