$\int4xe^{2x+7}dx$

$\frac{d}{dx}\left(2\arcsec\left(5x^2\right)\right)$

$\sqrt[4]{16a^8b^4}$

$\left(\frac{1}{\csc}+\frac{1}{\tan}.\cos\right).\tan$

$\int_7^{\infty}\left(\frac{1}{x\ln\left(x\right)}\right)dx$

$\left(3a-4\right)x^2+6x+\left(2a+1\right)=0$

$\left(-2+\frac{3i}{n}\right)^2$