$\int\frac{\sqrt{4x^2+16}}{x}dx$

$\frac{d^2}{dx^2}\left(x^4+2y^2=2\right)$

$\csc^2\left(t\right)-cot\:\left(t\right)$

$\left(-7x^4+7x^2+6x-8\right)\left(9x^2-9+3x^5\right)$

$3\sqrt{2}\left(\sqrt{2}\right)^4$

$|y|12^{2}\cdot12^{3}$

$\frac{\left(a+6\right)\left(a-6\right)+36}{a^{2}}$