因式分解 (1)4x(a-b)-8y(b-a) (2)-3x^3+6x^y-3xy^2
问题描述:
因式分解 (1)4x(a-b)-8y(b-a) (2)-3x^3+6x^y-3xy^2
答
(1)4x(a-b)-8y(b-a)
= 4x(a-b)+8y(a-b)
=4(a-b)(x+2y)
(2)-3x^3+6x^y-3xy^2
=-3x(x²-2xy+y²)
=-3x(x-y)²