$-15+4-16+6+2$

$71+380+86+47$

$\frac{y^2}{y-6}$

$12 \cdot 3 + 18 : ( - 2 + 8 )$

$\frac{sen\left(x\right)+\csc\left(x\right)}{sen\left(x\right)}=1-\frac{1}{tan\left(x\right)}$

$\int_{\frac{\pi}{4}}^{\frac{\pi}{3}}\frac{cos\:x\:+\:sen\:x}{sen\:2x}dx$

$\sqrt[5]{x^3y^2}\sqrt[10]{x^4y^{16}}$