$\frac{\left(p^{\frac{3}{2}}k^{\frac{1}{2}}\right)}{\left(3w\right)^{\frac{1}{2}}}-\frac{\left(p^{\frac{3}{2}}k^{\frac{1}{2}}\right)}{3^{\frac{3}{2}}\left(w\right)^{\frac{1}{2}}}-rk$

$-8x\:-3\:x\:-4\:$

$-3\cdot\left(-20\right)$

$\int x^2\:e^{-\sqrt{2}x}dx$

$\frac{2x^3-5x^2+x-2}{x-1}$

$\lim_{x\to7}\left(\frac{ln\left(x-6\right)}{x-6}\right)$

$\int_0^{\pi}\left(\pi-x\right)cosx\:dx$