$\left[\left(+14\right)-\left(-5\right)\right]$

$3xcotx+x^2cscx$

$\left(\tan\left(x\right)+1\right)^2-2\tan\left(x\right)$

$\sqrt{2}\cdot\cos x+8=7$

$\lim_{x\to\pi}\left(\left(cos\left(\frac{x}{2}\right)cot\left(7x\right)\right)\right)$

$-7-83+42+31-9-3$

$\int\frac{1}{1+25x^{2}}dx$