$4x-6x+15-x-4$

$\frac{x^9}{5x^4}$

$\int\left(\left(\frac{3u}{34}+\frac{v}{17}\right)^2+\left(\frac{u}{68}+\frac{3v}{17}\right)\right)dx$

$\left(\frac{1}{2}x+\frac{1}{2}y\right)^4$

$-4^2+-2^3$

$\int_0^2\left(\left(\sqrt{\frac{3}{2}}\cdot x\right)\cdot\left(\sqrt{\frac{5}{8}}-\sqrt{\frac{45}{8}}\cdot x^2\right)\right)dx$

$12c^2\:-\:36c\:+\:24$