64（x+y）*2-16(x-y)*2 分解因式

（x-y)(x-y)2(y-x) (x+2y-?）(x-2y+?) x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2 （x-2y）(x+y)+（x+y）计算 计算：（x-y）^2-(x+y)(x-y) 2（x-y）²-3(x-y)(-y-x) 化简y(x+y)+(x+y)(x-y)-x^2 (x+y)^2-16(x-y)^2 (x+y)^2-16(x-y)^2 16-8（x-y)+(x-y)2 （x-y／x+2y）³ (x+y)(x-y)-(x-y)^2如题 (x+y)(x-y)-(x-y)^2 【2(x-y)(x-y)(x-y)-8(x-y)(x-y)(x+y)+6y(x-y)(x-y)]/2(x-y)(x-y) 因式分解x(x+y)(x-y)-x(x+y)^2 分解因式：(x+y)^2+64-16(x+y) （x-2y）²+16y-8x+16 9（x+y）^2-16（x-y）^2 16（x+y）^2-25（x-y）^2 求因式分解(x-y)²-2(x-y)³和（x+y）（x-y）-x（x-y）