$\frac{3m^{-3}r^4p^2}{12t^4}$

$a+\left(+b-c\right)+2a-\left(+a+b\right)$

$\sin^245^{\circ\:}-\cos\:^245^{\circ\:}$

$10\left(\infty\right)^2-5\left(\infty\right)+8$

$\lim_{x\to0}\left(\frac{12-\cos\left(x\right)}{x^2}\right)$

$\frac{2\cot\left(x\right)\left(\csc\left(x\right)\right)^2}{\left(\sec\left(x\right)\right)^2}$

$\left(x\:+\:2y^2\right)^2$