因式分解:9a²(x-y)+4b²(y-x) 和 (x+y)²+2(x+y)+1 最好说下
求因式分解(x-y)²-2(x-y)³和(x+y)(x-y)-x(x-y)
因式分解 (1).(x+y)(x+y-6)+9 (2).x²-16y²-x-4y
因式分解:25(x+y)²-9(x-y)²;(x+y)²-4(x+y-1).
因式分解:(1)x²+x (2)4x²-9y (3)x²y-4y
因式分解(a-b)²(x-y)-(b-a)(y-x)²=(a-b)(x-y)×( )
(2x+y)²-(x+2y)² 因式分解
3(x-2y)²+(x-2y)因式分解
因式分解:25(x-y)²+10(y-x)+1
3m(x-y)-2(y-x)²因式分解
因式分解(x+y)²(x-y)-(x+y)(x²+y²)
因式分解:(1)(a+b)²+a+b+1/4 (2)6(x-y)²+3(y-x)³
因式分解 -5x³y(x-y)³+20y【x²(y-x)】²