计算,x·(9x³y-3xy²)÷(-3x²y)
x·(9x³y-3xy²)÷(﹣3x²y) 计算
计算:x•(9x³y-3xy²)/(-3x²y)
计算,x·(9x³y-3xy²)÷(-3x²y)
(xy-x²)²÷(x-y)²/xy·x-y/x² 计算
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计算;(xy-x²)÷x²-2xy+y²/xy · x-y/x²
计算[xy(x²-3y)+3xy²]·(-2xy)+x³y²(2x-y)
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[x(x²y²-xy)-y(x²-x³y)]÷3x²y
因式分解:[x(x²y²-xy)-y(x²-x³y)]÷3x²y
计算(2x³-3x²y-2xy²)-(x³-2xy²+y³)
计算:x²y-(2xy²-5x²y)+3xy²-y³