$-\frac{95}{6}+x+\frac{1}{18}x=0$

$\cos\left(\frac{\pi}{3}-x\right)$

$\left(x+1\right)\left(x-1\right)+\left(3+x\right)\left(3-x\right)$

$\int\:\left(\frac{x}{x^2+x+1}\right)dx$

$\left(+42\right)-\left(-15\right)$

$\frac{1}{4}\tan\left(\frac{2\pi}{8}\right)^2$

$2y\frac{dy}{dx}=ycos\left(x\right)$