$\left|6x^2+7x\right|5$

$x^2-9x-10=30$

$\frac{d}{dx}2x^{x^2}$

$4^2\cdot5^2\cdot70$

$mg\cos\left(x\right)-\left(\frac{mg\sin\left(x\right)}{\cos\left(y\right)}\right)\left(\sin\left(y\right)\right)$

$\left(15a^3b^0m\right)\left(3\frac{2}{5}a^2b^1m^{20}\right)$

$\int\frac{2sec^2x}{tanx}dx$