x²-9/x²+2x-3乘3x²-x-2/x²-5x+6,
1个回答
原式=[(x+3)(x-3)/(x+3)(x-1)][(3x+2)(x-1)/(x-2)(x-3)]
=(3x+2)(x-1)(x-3)/[(x-1)(x-2)(x-3)]
=(3x+2)/(x-2)
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