$290\cdot16\cdot350$

$a+\left(\left(-2a+b\right)-\left(-a+b-c\right)+a\right)$

$\lim_{x\to\sqrt{2}}\left(\frac{x+2}{x-\sqrt{2}}\right)$

$\int\frac{x+3}{\left(x^2-9\right)\left(x^2-1\right)}dx$

$\ln\left(x^3-4\right)-\ln\left(x^2-2x\right)=\ln\left(x+2\right)$

$\frac{cot\:a}{sec\:a}$

$\int\frac{x-39}{x^2-x-12}dx$