qqp question1: How do I integrate [math]\dfrac{1+x}{x^2 + 3x + 1} \mathrm{d}x[/math] ? question2: How do I integrate [math]\displaystyle\int \frac{x^5\,dx}{(x^2 + x + 1)(x^6 + 1)(x^4-x^3+x-1)}[/math]?