$\frac{dy}{dx}=3\left(2-y\right)$

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

$\int\:\frac{x^3+2x^2+x-3}{x^4+8x^2+16}dx$

$\sqrt { 121 }$

$u=\frac{\left(a^{3}b\right)^{-2}\cdot\left(ab^{-2}\right)^{3}}{\left(ab\right)^{-1}}:\left(\frac{2a}{b}\right)^{-2}$

$x^2\left(y-1\right)dy\:+ylnxdx=\:0$

$8=3-10\:\sin\left(x\right)$