$85\cdot\left(-100\right)$

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

$\frac{d}{dx}\sqrt[3]{\frac{x^2\cdot\left(x^2+1\right)^3}{\left(2x+1\right)^5}}$

$\frac{8a^2-32a+15}{2a+3}$

$\lim_{x\to5}\left(\frac{x^a-y^b}{x^3-y^4}\right)$

$3\left(\sec\:^2\left(x\right)-1\right)=3$

$\left(x^5-\frac{5}{2}\right)^2$