-4a^3b^2+6a^2b-2ab
问题描述:
-4a^3b^2+6a^2b-2ab
另:(3x+2)^2-12(3x-1)
答
-4a^3b^2+6a^2b-2ab
=-2ab(2a^2-3a+1)=-2ab(2a-1)(a-1)
(3x+2)^2-12(3x-1)
=(3x+2)^2-12(3x+2-3)
=(3x+2)^2-12(3x+2)+36
=(3x+2-6)^2
=(3x-4)^2