$\int\left(cos\:2z-\:sen\:3z\right)^2dz$

$\lim_{x\to\infty}\left(\frac{x-\cos\left(x\right)}{x}\right)$

$sen\left(3x\right)=-1$

$\sqrt[3]{b^2}$

$\frac{\left(3x^2-5\right)^4}{\left(4x^3+2\right)^3}$

$8\left(10\:-\:6q\right)+3\left(-7q\:-\:2\right)$

$\frac{\cos\left(x\right)-\cos\left(3x\right)}{\sin\left(3x\right)-\sin\left(x\right)}=\tan2x$