$\left(\sqrt{5}+\sqrt{7}\right)\left(\sqrt{5}-\sqrt{7}\right)$

$\int\frac{37}{x^2}dx$

$\frac{dy}{dx}\left(y=\left(cos\left(x\right)\right)^{x^2}\right)$

$8x+12x^2-4x^3$

$\left(\frac{\left(-1\right)^{n+1}}{3^{n+1}}\right)\left(x-4\right)^n$

$\frac{1-sen\left(x\right)}{\cos\left(x\right)}=cos\:\left(x\right)$

$y+cy=0$