(x²-y²)·6x/3xy-3x²计算
(x²-y²)·6x/3xy-3x²计算
计算:(xy-x²)×x-y/xy
(xy-x²)²÷(x-y)²/xy·x-y/x² 计算
计算3x/8y×16y²/27x² (2xy-x²)÷x-2y/xy 2x-6/x
计算(1)3x/8y×16y²/27x² (2)(2xy-x²)÷x-2y/xy 2x-6
计算:(-7x²y)(2x²y-3xy³+xy)
计算3x[xy-2x(1/y-x/3]+3y(x²-y²)
计算:(xy-x²)乘 x-y分之xy
计算;(xy-x²)÷x²-2xy+y²/xy · x-y/x²
x·(9x³y-3xy²)÷(﹣3x²y) 计算
计算:x•(9x³y-3xy²)/(-3x²y)
计算 2xy[4x²y²-3y(xy+x²y)-xy²]