计算 2+x+3/x-1*x^2-2x+1/x^2+6x+9
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计算2+x+3/x-1*x^2-2x+1/x^2+6x+9计算2+x+3/x-1*x^2-2x+1/x^2+6x+9计算2+x+3/x-1*x^2-2x+1/x^2+6x+92+[(x+3)/(x-1
计算 2+x+3/x-1*x^2-2x+1/x^2+6x+9
计算 2+x+3/x-1*x^2-2x+1/x^2+6x+9
计算 2+x+3/x-1*x^2-2x+1/x^2+6x+9
2+[(x+3)/(x-1)][(x²-2x+1)/(x²+6x+9)]
=2+[(x+3)/(x-1)][(x-1)²/(x+3)²]
=2+(x-1)/(x+3)
=[2(x+3)+(x-1)]/(x+3)
=(3x+5)/(x+3)
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2+x+3/x-1*x^2-2x+1/x^2+6x+9
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