计算:(-2x^4)^4y^3+2x^10*(-2x^2y)^3+2x^4*5(x^4)^3*(3y)^3=?
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-3y)(y+2x)-(4y-3x)(3x+4y)计算
计算【3(x-y)^2(x+y)^-2/4(x+y)^2(x-y)^-2】^-2
计算(2x-3y)(x+4y)-(3x+y)(x-2y)
3(x+y)-4(x-y)=11,2(x-y)+5(x+y)=27
方程式计算5X-2=Y 4X+3=Y 求X.Y
分解因式计算:x^2(x-y)+(y-x)=?x^3+x^2+1\4x=?(2x+y)^2-(x-2y)^2=?
x/x-y*y^2/x+y-x^3y2/x^4-y^4/x^2/x^2+y^2
计算:(3x-4y)-[-(2y+x)+(x-3y)]-6x
计算:1/(x-y)-1/(x+y)-2y/(x^2+y^2)-4y^3/(x^4+y^4)-8x^7/(x^8+y^8
计算:[(2x - 3y)^2 - (x-y)(4x+2y)] / 2y
(x+3y-4)(2x-y)