$2\sec x-7=0$

$\frac{3x^2+25x+24}{x+7}$

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

$0\cdot0+2$

$\lim_{x\to\infty}\left(\frac{8}{x^2}-\sqrt{x}\right)$

$\arctan\left(\frac{\frac{1}{2}}{\frac{\sqrt{3}}{2}}\right)$

$\frac{\left(\cos\left(x\right)+\sin\left(x\right)\right)^2}{\sin\left(x\right)}=\csc\left(x\right)+2\cos\left(x\right)$