$\frac{6x}{x^2-9}+\frac{x}{x+3}+2$

$p\frac{dp}{dx}+p^2+2p=0$

$-17153-+8779$

$\left(4x^3+3x+4\right)+\left(3x^3+2x^2-5\right)-\left(2x^2+x-1\right)$

$\int_0^{\frac{\pi}{3}}xtan^2\left(x\right)dx$

$\int\frac{z^3}{\sqrt{5+z^2}}dz$

$\int_{\frac{\pi}{6}}^{\frac{3\pi}{2}}\frac{\sen\left(2\theta\right)}{\sqrt{\sen^{2}\theta+1}}d\theta$