Easy
Divide the polynomials x2+2x−1\frac{x^{2}+2}{x-1}x−1x2+2
x+1+3x−1x+1+\frac{3}{x-1}x+1+x−13
x−1+3x−1 x-1+\frac{3}{x-1}x−1+x−13
x+1−3x+1x+1-\frac{3}{x+1}x+1−x+13
x−1+3x+1x-1+\frac{3}{x+1}x−1+x+13
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