$\int_1^{\infty}\left(\frac{1}{x^2+6}\right)dx$

$\frac{9x^2y^4}{9x^6y^6}$

$\frac{x^3-2x^2-4}{x^3-2x}$

$\lim_{x\to\frac{\pi}{3}}\left(\frac{\csc\left(x\right)}{1-\tan\left(x\right)}\right)$

$-98\:-\:\left(-46\right)$

$\left(x\right)^3+2\left(x\right)\left(7\right)+\left(7\right)^3$

$\frac{d}{dx}\:4xe^{4x}$