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
=9y(x-y)²-4(x-y)²
=(x-y)²(9y-4)
y(3x-3y)²-(2y-2x)²(分解因式,
=9y(x-y)²-4(x-y)²
=(x-y)²(9y-4)