-2(-3xy^2+2x)+3(-2xy^2-x)计算过程
计算3xy[2xy-x(y-2)+x-1]
计算:3xy[2xy-x(y-2)+x]
2x平方y-2xy+3xy平方+5+2xy+x平方y-3xy平方-3 过程!
(x^2+xy/x-y)/(xy/x-y)计算
计算:3xy(x2y-xy2+xy)-xy2(2x2-3xy+2x)因式分解
计算:(5-xy/x^3-x^2y)/(1-5/xy)^2*(y-x)^3
化简:xy分之3x^2+2xy-xy分之2x^2-xy=
3y/2x+2y + 2xy/x²+xy等于多少过程
计算:[5xy^2(x^2-3xy)-(-3x^2y^2)^3]÷(5xy)^2
(-x²+2xy-y的平方)-2(xy—3x²)+3(2y的平方-xy) 计算.
1.计算 (-x方+2xy-y方)-2(xy-3x方)+3(2y方-xy)
计算3y/(2x+2y)+2xy/x^2+xy