$\int\left(4\frac{1}{x^2+2x+17}\right)dx$

$\lim_{x\to0}\left(\frac{\left(x-y\right)^2}{x^2+y^2}\right)$

$\frac{dy}{dx}-\frac{y\left(x-4\right)}{3x}=0$

$\int_2^9\frac{\left(x-1\right)^2}{\sqrt[3]{x}}dx$

$x^2-8^2+9$

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

$^{x^3}+2<2$