计算(3xy^2-6x^y)/(-2x)
计算:3xy[2xy-x(y-2)+x]
(2X平方y+3xy平方)-(6x平方-3XY平方)(计算)
计算3x/8y×16y²/27x² (2xy-x²)÷x-2y/xy 2x-6/x
计算(3x^3y-x^2y+1/2xy)÷(-1/2xy)
计算:(-7x²y)(2x²y-3xy³+xy)
计算(1)3x/8y×16y²/27x² (2)(2xy-x²)÷x-2y/xy 2x-6
计算4xy+(x-2y)的平方+(x+3y)(3y-x)
计算 2xy[4x²y²-3y(xy+x²y)-xy²]
1.计算 (-x方+2xy-y方)-2(xy-3x方)+3(2y方-xy)
计算3xy[2xy-x(y-2)+x-1]
计算;(xy-x²)÷x²-2xy+y²/xy · x-y/x²
计算(2x³-3x²y-2xy²)-(x³-2xy²+y³)