$\int\left(x^{-3}sin\left(x^{-2}+1\right)\right)dx$

$tna\left(x\right)\cdot cos\left(x\right)=sen\left(x\right)$

$x^2+12x=144$

$\lim_{x\to0}\:\left(9sinx\right)^{7tanx}$

$\frac{\cos^2\alpha}{\text{sen}\alpha}+\text{sen}\alpha=\frac{1}{\text{sen}\alpha}$

$\left(10-6\right)^2+6\:x\:2\:-\:\left(3+2\right)^2$