$\left(\sqrt{x}+5\right)\left(\sqrt{x}-5\right)$

$10^{-x^2}=\frac{1}{9}$

$\left(\frac{cos\left(u\right)}{csc\left(u\right)}\right)\left(\frac{u}{1}\right)$

$12 - ( - 8 ) - ( - 3 ) - 5 - ( - 4 )$

$\frac{dy}{dt}=te^{3t}-2y$

$-y^2=x-3$

$\lim\:_{x\to\:2}\left(\frac{t^3+3t-10}{t^3-2t^2+t-2}\right)$