因式分解(x-y)^2-6(x^2-y^2)+9(x-y)^2

6(x+y)2-2(x-y)(x+y)因式分解 因式分解3x^2(x-y)+6x(y-x) (x-y)^2-(x-y)^3因式分解 因式分解(x-y)^2-x-y 4x(y-x)-y^2因式分解 (x+y)^2-3(x-y)因式分解 9(x+y)^2-6(x+y)+1进行因式分解 怎么因式分解6(x-y)-9-(x-y)∧2 9(X+Y)^2-6(X+Y)+1 (因式分解) 因式分解(x-y)^2-6(x-y)+9 6x(x-y)^2+3(y-x)^3 因式分解 因式分解：x×x-xy-2y×y-x-y