$\lim_{x\to0}\left(\frac{\left(\left|x+5\right|-\left|x-5\right|\right)}{x}\right)$

$\left(-2+5\right)\left(-2-1+2\right)+10$

$\int\left(\frac{1}{\sqrt{1+3x}}\right)dx$

$-3\left(x-4\right)+3\left(a-6\right)$

$\int\left(e^{2x}\left(\sqrt{16-e^{4x}}\right)\right)dx$

$\left(3m^3+m^2-2m-5\right)\left(m^2-5m-6\right)$

$t+150=800$