$-3+2\cdot5-2\cdot\left[-5-3\cdot\left(-2\right)-\left(-10\right):\left(-2\right)\right]$

$2x^3^3-56x$

$\frac{dz}{dx}=-z\tan\left(x\right)$

$5m^28m+3$

$25+\left|-14\right|+3$

$-3x^2+25x-6$

$\lim_{x\to0}\left(\frac{ln\left(\frac{\left(1+\tan\left(x\right)\right)}{1+\sin\left(x\right)}\right)}{senx}\right)$