Integrating Fraction Fractions: Solving \int\frac{x^{2}+2x+1}{x^{2}+1}

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Homework Statement


\int\frac{x^{2}+2x+1}{x^{2}+1}

Homework Equations


INTEGRAL OF X=\frac{x^{n+1}}{n+1}
I can't get the integral to work on the left side for some reason.

The Attempt at a Solution


I have completely forgotten how to integrate fractions. I know that "log(x^2+1)+C" would be included in it though I'm not to sure where to go from there.
 
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\frac{x^{2}+2x+1}{x^{2}+1} = \frac{x^2 + 1}{x^2 + 1} + \frac{2x}{x^2+1}
 
snipez90 said:
\frac{x^{2}+2x+1}{x^{2}+1} = \frac{x^2 + 1}{x^2 + 1} + \frac{2x}{x^2+1}

I got it, thanks.
 
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There are two things I don't understand about this problem. First, when finding the nth root of a number, there should in theory be n solutions. However, the formula produces n+1 roots. Here is how. The first root is simply ##\left(r\right)^{\left(\frac{1}{n}\right)}##. Then you multiply this first root by n additional expressions given by the formula, as you go through k=0,1,...n-1. So you end up with n+1 roots, which cannot be correct. Let me illustrate what I mean. For this...
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