$\frac{d}{dx}\:x^{x^{x^5}}$

$5x^2+20x+12=0$

$\lim_{x\to\frac{1}{2}}\left(\left(1-2x\right)\left(tan\left(\left(\pi\right)\left(x\right)\right)\right)\right)$

$3^3-3^2$

$5\left(-1\right)^2\left(2\right)^2$

$\lim_{x\to0}\left(\frac{3ln\left(5+x\right)-\frac{1}{5}\sin\left(3x\right)}{x.sen\left(4x\right)}\right)$

$\left(5\cdot8\right)^x$