(3x-y)^2+(2x+3y)(-2x-3y)+5xy 计算
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)^2+(2x+3y)(-2x-3y)+5xy 计算
计算:(5-xy/x^3-x^2y)/(1-5/xy)^2*(y-x)^3
计算:(x^2-y^2/xy)^2/(x+y)^2*(x/x-y)^3
计算3x[xy-2x(1/y-x/3]+3y(x²-y²)
计算3xy[2xy-x(y-2)+x-1]
计算:3xy[2xy-x(y-2)+x]
计算:[x(x^2y^2-xy)-y(x^2-x^3y)]/3x^2y
计算[x(x^2y^2-xy)-y(x^2-x^3y)]/3x^2y
[x(x^2y^2-xy)-y(x^2-x^3y)]3x^2y计算,
计算4xy+(x-2y)的平方+(x+3y)(3y-x)
[x(x^2y^2-xy)-y(x^2-x^3y)]/3x^2y