$\tan\left(w\right)^2\cdot\csc\left(w\right)^2$

$\lim_{x\to\infty}\left(\frac{3x^2}{x-1}\right)-\left(\frac{3x^2}{x+1}\right)$

$\left(\frac{2}{7}a^2-\frac{3}{4}\right)^2$

$\lim_{x\to0}\left(\frac{\sin\left(x\right)-3x}{x}\right)$

$128+-329+-105$

$7-5+3-4$

$\int_0^{10}\left(cx\right)dx$