$\int\frac{x+3}{\left(x-1\right)\left(x^2+1\right)}dx$

$2y\frac{dy}{dx}=\left(10x+5\right)$

$5x\:\cdot\:-5x$

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

$\left(a^2-11a+28\right)$

$\lim_{h\to0}\left(\frac{-e+e^{1+h}}{h}\right)$

$y=\frac{x^2}{x+1};\:x=-3$