计算 (x-y)²·(y-x)³÷(x-y)⁴
计算 [12(x+y)³(y-x)]³÷[4(x+y)²(x-y)]²
x·(9x³y-3xy²)÷(﹣3x²y) 计算
(x-y)·2(x-y)²·3(x-y)³ 计算
计算:x²-y²/x·-x²/(x-y)²;8y²y³·(-
计算4(x+y)^5(x-y)^4÷[2(x+y)³*(y-x)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[(x²-y²)/y]²÷(x²+xy)³·(xy/y-x)
计算:(1)(-x²/y)·(-y²/x)³÷(-y/x)的4次方;
(xy-x²)²÷(x-y)²/xy·x-y/x² 计算
利用公式计算(x²-y²)÷(x+y)
(急)计算(x²-y²/xy)²÷(x+y/y)²·(x/x-y)³
计算6x³y^6÷(1/2)y³÷(-3x²y)-(12x^4y^6-8x²y^