$\lim_{x\to\infty}\left(\frac{2x^3-2x^2-5}{x^3+2x^2-49}\right)$

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

$6ab2-2ab2+6ab2+7ab2+ab2\:8ab2-11ab2+2ab2\:$

$+\frac{6}{-2}$

$\int\left(\sqrt{x-2}\right)dx$

$\frac{\sin\left(\frac{8\pi}{7}\right)}{\frac{1}{4}}$

$-176-80$