$\lim_{x\to2}\left(\frac{e^{x^2}-e^{2^x}}{x-2}\right)$

$\frac{dy}{dx}=\frac{1+y^2}{\left(x+3\right)^5}$

$\lim_{n\to-1}\left(\frac{n^3-n}{n\left(n-1\right)\left(n+1\right)}\right)$

$10b-4b-b+2+6$

$\int\left(\frac{y+1}{y^2+1}\right)dy$

$\left(3-8\right)\cdot\left(-2.5\right)$

$-3.1\cdot\left(-2.9\right)$