计算x²·(x-y)+(y-x)

计算(x²/x+2y)-x+2y-2 (x-y)·2(x-y)²·3(x-y)³ 计算 (xy-x²）²÷（x-y)²/xy·x-y/x² 计算 计算[x/﹙xy+y﹚]·[﹙x²+x﹚／x²y] 计算：x²-y²/x·-x²/(x-y)²；8y²y³·（- 计算 [12(x+y)³(y-x)]³÷[4(x+y)²（x-y)]² 计算：(x+y)²-4(x+y)(x-y)+4(x-y)² 计算：①-x·(y-x)³·(x-y)的四次方 ②(x-y)²·(y-x)³·（x-y）的 计算：(xy-x²)×x-y/xy 计算:(-x-2y) * (3x-y) 计算3x[xy-2x(1/y-x/3]+3y(x²-y²) 计算:1、(xy分之x²-y²)×(x-y分之x)-(y分之x)；