1,原式=3a^2(2a-3b^2C)
2.原式=-2m(m^2-4m+3)
=-2m(m-3)(m-1)
3.原式=1/2ab(ab^2-4a+6b)
4.原式=(x+y)(3a-2b)
5.原式=3x(x-y)(x-2)
6.原式=5a(a-b)[(a-b)^2+3a]
=5a(a-b)(a^2-2ab+b^2+3a)
1,原式=3a^2(2a-3b^2C)
2.原式=-2m(m^2-4m+3)
=-2m(m-3)(m-1)
3.原式=1/2ab(ab^2-4a+6b)
4.原式=(x+y)(3a-2b)
5.原式=3x(x-y)(x-2)
6.原式=5a(a-b)[(a-b)^2+3a]
=5a(a-b)(a^2-2ab+b^2+3a)