计算 (5y/6x^3)^2·{-(3x^4/5y^2)}^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)
计算:(x+y)^2×(-x-y)^3×[-3/4(x-y)^3]×5/6(y-x)^2
3x+2=y 5X+4=Y 7X+6=Y 9X+8=y 11x=y要如何计算
方程式计算5X-2=Y 4X+3=Y 求X.Y
计算 (5y/6x^3)^2·{-(3x^4/5y^2)}^3
计算:(-x-2y) * (3x-y)
计算:(3x-4y)-[-(2y+x)+(x-3y)]-6x
计算:(3x-y)2-(2x+y)2+5x(y-x)
计算:3x(2x-3y)-(2x-5y)4x
计算(x+y)(x+y)^2(-x-y)^3
x^8-x^7y+x^6y^2-x^5y^3+x^4y^4-x^3y^5+x^2y^-xy^7+y^8
(x-3y)(y+2x)-(4y-3x)(3x+4y)计算