(3x-2y)^2-(27x^3-8y^3)/(3x-2y) 要用什么公式 用乘法公式计算不能抄袭

(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(x-y)2-(y-x)3 [2/3x-2/x+y(x+y/3x-x-y)]/x-y/x 化简：{2/3x-2/(x+y)[(x+y)/3x-x-y]}/(x+y)/x 计算2/3x-2/x+y(x+y/3x-x-y)/x-y/x 化简3x-2/(x+y)[(x+y)/3x-x-y]÷(x-y)/x 3(x+y)-4(x-y)=11,2(x-y)+5(x+y)=27 12y(x-y)^2-8(x-y)^3=? 18(x+y)^8(x-y)^7÷[3(x+y)^3(x-y)^3]^2 4x-3y/x-2y÷6y-8x/y-2x 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) 81/8*(-x-y)^6*(x-y)^3*4/9(x+y)^4*(y-x)^2 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) [(3x+y)(x-y)-(2x+3y)(x-y)]*(x-y) 计算：x+2y/x-y+2x/y-x-3y/x-y