$\int\frac{x^2+3x+2}{\left(x^2+1\right)\left(x-1\right)}dx$

$\int_{-\infty}^{-2}\left(\frac{1}{x}\right)dx$

$0667\cdot40$

$\left(+5\right)x\left(+11\right)$

$\ln\left(x\right)-\ln\left(5\right)=0$

$\frac{\sin\left(\theta\right)}{1-\sin^2\left(\theta\right)}$

$10+11+2+3-1+15$