$3\cdot tan^2\left(x\right)=2\cdot sec^2\left(x\right)+1$

$7\left(a+b\right)+12$

$\left(45p+2x\right)^{2}$

$8cos2x$

$\left(\frac{1}{4}x\:+\:\frac{1}{5}\right)\left(\frac{1}{4}x-\frac{5}{3}\right)$

$\lim_{x\to\infty}\left(\sqrt{x}\left(\sqrt{x+3}\:-\sqrt{x}\right)\right)$

$\int2\sqrt{x^2+2}dx$