$\left(3d+2u+f\right)^2$

$\int\frac{4x^3+\sqrt[4]{x}}{2x}dx$

$\int\frac{4x^2+7x+9}{x^3+4x^2-x-4}dx$

$x^5-2x^4-3x^3+6x^2+2x-4$

$\frac{\left(48x^3z^2-30x^6z^2+24x^5z^3\right)}{\left(6x^2z+5\right)}$

$\lim_{x\to0}\left(\frac{x^{3}}{2\tan x-\sen2x}\right)$

$8a^2-2+5+10a+9+7$