0.125x*3+8y*3

(2x+y)²+(x+3y)(x-3y)-x(5x+8y)因式分解 [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 【2(x-y)^3-8(x-y)^2(x+y)+6y(x-y)^2】/2(x-y)^2= (x+y)/y=8/3则x/y=__ y/x-y=___ (x+y)/y=8/3则x/y=__ y/x-y=___ 18(x+y)^8(x-y)^7÷[3(x+y)^3(x-y)^3]^2 12y(x-y)^2-8(x-y)^3=? （x-y)^3·(y-x)^4 / [(x-y)^8/(y-x)^3] (3x-4y)(5x-4y)-(7x-8y)(6y-5x) 4x-3y/x-2y÷6y-8x/y-2x 81/8*(-x-y)^6*(x-y)^3*4/9(x+y)^4*(y-x)^2 3(x-y)^2-7(x-y)+8(y-x)^2+6(y-x)合并同类项. 5(x-y)^2-(x-y)-8(x-y)^2-3(x-y) (3x-y)(3y+x)-(x-y)(x+y) 计算(x^8-x^7y+x^5y^3-x^4y^4+x^3y^5-x^y^7+y^8)(x^2+xy+y^2) 【x-y-(x-y分之4y平方)】【x+y-(x+y分之4x平方)】除以【3(x+y)-x-y分之8xy】 因式分解：a(x-y)^2+b(y-x)^3 4(x-y)^2+8(y-x)(x+y)1.a(x-y)^2+b(y-x)^3 2.4(x-y)^2+8(y-x)(x+y) 2(x-y)+3（x+y）2-5(x-y)-8（x+y）2-（x-y）