$\left(-2x^2-34\right)^2$

$\lim_{x\to\infty}\left(\frac{1}{2}ln\left(x+1\right)-\frac{1}{4}ln\left(x^2+1\right)\right)$

$\frac{dy}{dx}\left(x^2+y^2=20\right)$

$8-7b-4$

$20+901+51$

$\left(\left(-3\right)^2\right)^4$

$\lim_{x\to\pi}\left(\frac{cos\left(x\right)sin\left(x\right)}{x-\pi\:}\right)$