计算:x+2/x-3×x²-6x+9/x²-4
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计算:x+2/x-3×x²-6x+9/x²-4
计算:x+2/x-3×x²-6x+9/x²-4
计算:x+2/x-3×x²-6x+9/x²-4
(x+2)/(x-3)×(x²-6x+9)/(x²-4)
=(x+2)/(x-3)×(x-3)²/[(x+2)(x-2)]
=(x-3)/(x-2)