$\lim_{x\to-2}\left(\frac{x^2+8}{2}\right)$

$x^2-3x-1638=0$

$x=3.581x\sin\left(45\right)$

$\lim_{x\to0}\left(\frac{\tan\left(x\right)}{\cos\left(x\right)}\right)$

$\left(722-\left(938\right)\right)-\left(\left(-284\right)-\left(-273\right)\right)+\left(\left(-173\right)-\left(26\right)\right)$

$\frac{5^5.5^5}{\left(5^2\right)^4}$

$\int-8y\:dx$