计算(6x²×y^3)÷(3xy²)²是多少
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[5xy²(x²-3xy)-(-3x²y²)³]÷(-5xy)
计算 2xy[4x²y²-3y(xy+x²y)-xy²]
计算:(-7x²y)(2x²y-3xy³+xy)
计算:(xy-x²)×x-y/xy
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(xy-x²)²÷(x-y)²/xy·x-y/x² 计算
(x²-y²)·6x/3xy-3x²计算
计算:(xy-x²)乘 x-y分之xy
计算;(xy-x²)÷x²-2xy+y²/xy · x-y/x²
计算:x²y-(2xy²-5x²y)+3xy²-y³