$44\cdot\frac{4}{2}\cdot\frac{3}{3}$

$2a-6-ab^2+3b^2$

$35x^2-34x+8$

$7-32-45-6+12-45$

$\int5\left(2+3\tan x\right)^4\sec^2\left(x\right)dx$

$\left(-11\right)\left\{15+\left(-16\right)\right\}\left\{\left(-14\right)-\left(-11\right)\right\}$

$\:cot\left(\frac{\pi\:}{2}+x\right)=tan\left(2\pi\:-x\right)$