$\frac{-52}{-2}-30$

$\left(x+3x^3\sin\left(y\right)\right)dx+\left(\frac{3}{4}x^4\cos\left(y\right)\right)dy=0$

$\frac{x^k}{\left(lnk\right)^k}$

$\frac{j^{-3}p^3}{j^8p^{-7}}$

$2\left(\frac{2}{5}x+4\right)=2\frac{2}{5}x+8$

$\left(a+b\right)^3=a^3+b^3$

$\lim_{w\to0}\left(\frac{w^2}{\cos\left(w\right)}-1\right)$