计算:(1)(-x²/y)·(-y²/x)³÷(-y/x)的4次方;(2)2x-6/4-4x+x²·x-2/x+3÷3-x/x²-4;(3)(a²-b²/b)²÷(a²+ab)·(ab/b-a)²;(4)(1-x/3-x)²÷(x²-6x+9/9-x²)²·1/x²-2x+1
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计算:(1)(-x²/y)·(-y²/x)³÷(-y/x)的4次方;(2)2x-6/4-4x+x²·x-2/x+3÷3-x/x²-4;(3)(a²-b²/b)²÷(a²+ab)·(ab/b-a)²;(4)(1-x/3-x)²÷(x²-6x+9/9-x²)²·1/x²-2x+1
计算:(1)(-x²/y)·(-y²/x)³÷(-y/x)的4次方;
(2)2x-6/4-4x+x²·x-2/x+3÷3-x/x²-4;
(3)(a²-b²/b)²÷(a²+ab)·(ab/b-a)²;
(4)(1-x/3-x)²÷(x²-6x+9/9-x²)²·1/x²-2x+1
计算:(1)(-x²/y)·(-y²/x)³÷(-y/x)的4次方;(2)2x-6/4-4x+x²·x-2/x+3÷3-x/x²-4;(3)(a²-b²/b)²÷(a²+ab)·(ab/b-a)²;(4)(1-x/3-x)²÷(x²-6x+9/9-x²)²·1/x²-2x+1