$\frac{\left(2x^3+15x^2+22x+15\right)}{\left(x+5\right)}$

$\frac{\left(-2\right)^8}{\left(-2\right)^3}$

$-8x+5=-11$

$\lim_{x\to0}\left(\frac{\ln\left(\tan\left(2x\right)\right)}{\ln\left(sen\left(3x\right)\right)}\right)$

$\left(7x-8z\right)\left(5x-7x\right)$

$\left(2x+y-2z\right)^2$

$\int\left(\frac{1}{\sqrt{x^2-6x+5}}\right)dx$