$\left(\left(-11\right)-\left(2-19\right)\right)-\left(\left(5-18\right)-\left(17+13\right)\right)$

$-\frac{350,000}{-0.13}\left|e^{-0.13\left(0\right)}\right|$

$7\left(8+6-17\right)-10$

$\frac{dy}{dx}\left(x-1\right)=x\cdot y$

$\lim_{n\to\infty}\:\frac{1}{2^n+3}$

$b^2-\frac{c}{3}$

$8x^3+2x^3+3x^3$