计算:[(4x^3-1/2y)^2+4y(x^2-y/16)]/(8x^2)
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(x^8-x^7y+x^5y^3-x^4y^4+x^3y^5-x^y^7+y^8)(x^2+xy+y^2)
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)
(x-3y)(y+2x)-(4y-3x)(3x+4y)计算
计算:[(2x - 3y)^2 - (x-y)(4x+2y)] / 2y
计算:(-x-2y) * (3x-y)
计算:8x^2y^4(-3x/4y^2)/(-x^2y/2)
计算(x+y)(x+y)^2(-x-y)^3
计算(4x^2-2x^3+6x)/(-2x)-(x-1)^2y^2-4/y^2-y-6)+(y+2/y-3)/(y+1/
分解因式计算:x^2(x-y)+(y-x)=?x^3+x^2+1\4x=?(2x+y)^2-(x-2y)^2=?
计算:(3x-4y)-[-(2y+x)+(x-3y)]-6x