$x^3y+5x$

$\int12x^{-3}dx$

$2\cdot\frac{\sqrt{2}}{2}$

$\frac{cos2\left(x\right)}{sin\left(x\right)}+sin\left(x\right)=\frac{cot\left(x\right)}{sec\left(x\right)}$

$y'\:+\:\frac{y}{x}\:=\:y^{\frac{2}{3}}$

$-12-11-9-9-15$

$\sin\left(\frac{2\pi}{9}\right)\cos\left(\frac{\pi}{18}\right)-\cos\left(\frac{2\pi}{9}\right)\sin\left(\frac{\pi}{18}\right)$