$\int\sin^2\left(\frac{x}{a}\right)dx$

$\lim_{x\to0}\left(\frac{2-2\cos\left(x\right)}{6x}\right)$

$12x^2-35x-125=0$

$\frac{1}{\sin\left(x\right)+\sin\left(2x\right)+\sin\left(3x\right)}$

$\left(13x^2+5y\right)^2$

$-9\:\left(8\:+\:3w\right)$

$\int\frac{6x^5}{\left(x^6-2\right)^4}dx$