1)3x^2+2x+1/x^3-1 - 1-x/x^2+x+1 - 2/x-12)5/x + x/x+6 -30/x^2+6x3)3x+1/(x-1)^2 - 1/x+1 + x+3/1-x^24)1/x+3 - 1/x-3 - 2x/x^2-95)1/x^2-x+1 + 1 - x^2+2/x^3+1
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