$-\left|-2\left(5+6+6\right)-1\right|-9\left|-2\left(-2-6+6\right)-9\right|$

$3x^{2\:}-2x=5$

$\lim_{x\to0}\left(\frac{e^{x^3}-1}{2x-ln\left(1+2x\right)}\right)$

$\int\tan\:\frac{x}{5}\:dx$

$y'=2\cdot\frac{y}{x}$

$128\cdot11$

$\left(-2a^5\right)^3\left(-a^8\:y^3\right)^3$