「(2x-y)^2+y(x-y)」÷8x「4x(x-1)^2-x(2x+3)(2x-3)」÷4x

【2(x-y)(x-y)(x-y)-8(x-y)(x-y)(x+y)+6y(x-y)(x-y)]/2(x-y)(x-y) [2(x-y)^5-8(x-y)^2(x+y)+6y(x-y)^2]÷2(x-y)^2[2(x-y)^3-8(x-y)^2(x+y)+6y(x-y)^2]÷2(x-y)^2 x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2 化简3x-2/(x+y)[(x+y)/3x-x-y]÷(x-y)/x [(-x-y)(-x+y)-(x+y)^2-x(y-y^2)}÷1/2y [(x+y)(x-y)-(x-y)²+2y(x-y)]÷4y 4x-3y/x-2y÷6y-8x/y-2x 18(x+y)^8(x-y)^7÷[3(x+y)^3(x-y)^3]^2 化简y(x+y)+(x+y)(x-y)-x^2 (x+y)(x-y)-(x-y)^2如题 (x+y)(x-y)-(x-y)^2 [(x+y)^2-y(2x+y)-8x]÷2x,其中x+-2 因式分解x(x+y)(x-y)-x(x+y)^2 (x+y)-(x-y)^3÷(x-y)(x+y)×2y化简e , (x-y)²-8(x-y-2) 16-8（x-y)+(x-y)2 -8(y-x)^2×(x-y) [(x-y)^2-(x+2y)(x-2y)]/y 「（x²+y²）-（x-y）²+2y（x-y）」÷4y,其中2x-y=18