$10-5\left(3-6\right)+2\left(8-7\right)$

$\int_{-5}^3\left(\frac{x}{\sqrt{x^2-9}}\right)dx$

$9+9cosx=4$

$\int\left(-6cos^2x\right)dx$

$\int\left(\frac{26}{x\ln\left(5x\right)}\right)dx$

$\lim_{x\to3}\left(\frac{4g^2+4g-3}{2g-1}\right)$

$5.9+\:\left(-8.7\right)-\left(1.2\right)$