(-2x^3y)^2(xy)^3(计算)
计算:3xy[2xy-x(y-2)+x]
计算3xy[2xy-x(y-2)+x-1]
计算 2xy[4x²y²-3y(xy+x²y)-xy²]
计算(3x^3y-x^2y+1/2xy)÷(-1/2xy)
计算:(-7x²y)(2x²y-3xy³+xy)
1.计算 (-x方+2xy-y方)-2(xy-3x方)+3(2y方-xy)
计算4xy+(x-2y)的平方+(x+3y)(3y-x)
(2X平方y+3xy平方)-(6x平方-3XY平方)(计算)
计算:(5-xy/x^3-x^2y)/(1-5/xy)^2*(y-x)^3
计算:x²y-(2xy²-5x²y)+3xy²-y³
计算(2x³-3x²y-2xy²)-(x³-2xy²+y³)
计算(2X的平方Y-XY)乘以3XY等于多少