$x^2y^'-2y=0$

$\lim_{x\to\frac{2}{\pi}}\left(x-\frac{\pi}{2}\right)secx$

$\left(2mn^2\right)\left(2mn^2\right)\left(2mn^2\right)$

$\int\frac{\left(x^2+4x-3\right)}{\left(x-3\right)\left(x^2+9\right)}dx$

$\lim\:_{x\to\:3}\left(\frac{3e^{2x+6}+x^2-12}{x^3+6x^2+9x}\right)$

$\left(x^2\left(x^2+2y^2\right)+\left(y^2+z^2\right)\left(y+z\right)\left(y-z\right)\right)$

$93.24+359.2+5.864$