y(3x-3y)²-(2y-2x)²(分解因式,
问题描述:
y(3x-3y)²-(2y-2x)²(分解因式,
答
9(x-y)^2-4(x-y)^2
=(9y-4)X(x-y)^2
答
y(3x-3y)²-(2y-2x)²
=y*9(x-y)^2-4(x-y)^2
=(x-y)^2(9y-4)
答
=9y(x-y)²-4(x-y)²
=(x-y)²(9y-4)