计算:x^2-3x-1/x-1 - x^2+3x+3/x+3 + 2x+12/x+3
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计算:x^2-3x-1/x-1 - x^2+3x+3/x+3 + 2x+12/x+3
![计算:x^2-3x-1/x-1 - x^2+3x+3/x+3 + 2x+12/x+3](/uploads/image/z/19589364-36-4.jpg?t=%E8%AE%A1%E7%AE%97%EF%BC%9Ax%5E2-3x-1%2Fx-1+-+x%5E2%2B3x%2B3%2Fx%2B3+%2B+2x%2B12%2Fx%2B3)
x^2-3x-1/x-1 - x^2+3x+3/x+3 + 2x+12/x+3
=-1/x+3/x+ 2x+12/x+5
=14/x+2x+5
=-1/x+3/x+ 2x+12/x+5
=14/x+2x+5
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