$\lim_{x\to0}\left(\frac{t^2}{sin2\left(t\right)}\:\right)$

$\frac{80.01}{-12.7}$

$-\left(-3.6p-10\right)$

$169b^{\left(4\right)}+200b^{\left(2\right)}+144+112b^{\left(2\right)}-112b^{\left(2\right)}$

$4-2r.10-3r-6$

$\int_0^{\infty}8e^{-8e}dx$

$\frac{\tan\left(x\right)^2}{\sin\left(x\right)^2}-1$