(-2a)³÷a×a的-1次幂= (5x-4)(x-1)+(2x-3)(2x+3)
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(-2a)³÷a×a的-1次幂= (5x-4)(x-1)+(2x-3)(2x+3)
(-2a)³÷a×a的-1次幂= (5x-4)(x-1)+(2x-3)(2x+3)
(-2a)³÷a×a的-1次幂= (5x-4)(x-1)+(2x-3)(2x+3)
(-2a)³÷a×a的-1次幂
=-8a³÷a²
=-8a
(5x-4)(x-1)+(2x-3)(2x+3)
=5x²-9x+4+4x²-9
=x²-9x-5
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