$\frac{\left(s+3\right)}{\left(s+1\right)\left(s+2\right)}$

$\left(5a^2+4a-9\right)-\left(3a^2+6a-5\right)$

$\left(y-yx^2\right)\frac{dy}{dx}=\left(y-1\right)$

$4.5+0.46+3.25$

$\left(2x+3\right)\cdot\left(x+6\right)$

$y+x^2=6$

$\lim_{x\to0}\left(\frac{cos\left(3x-1\right)}{x^2}\right)$