$\left(15x-1\right)^3$

$\left(-2\right)-\left|\left(-6\right)-\left(-14\right)\right|\cdot\left|\left(-15\right)+2\right|$

$5x\:+12,con\:x=2,5$

$\int\left(\frac{sec^2\left(x\right)}{tan^3\left(x\right)}\right)dx$

$9.639+6.0$

$48-\left[-\left(56+99+88\right)+\left(-86+123\right)\right]+34$

$\sin\left(80\right)\cos\left(35\right)-\cos\left(80\right)\sin\left(36\right)$