$xdy+y^2dx=0$

$m^2-14m^2-m^2-115m^2$

$\int_1^{10}\left(4x+2\right)\sqrt{2x^2+2x}dx$

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

$\frac{d^2}{dx^2}\left(x^5-2x^4+2x^2-7\right)$

$\sqrt[5]{x^4.x^2}.\sqrt[10]{x^6}.\:y^8$

$t^2-\:-10t-25$