$\lim_{x\to6}\left(\frac{\left(t^3-6t+95\right)}{t^2-t-30}\right)$

$a\ln\left(2x-7\right)+x^2+6$

$\left(\csc^2u-1\right)\sin^2u$

$\lim_{x\to0}\left(\frac{1+\tan\left(x\right)}{1+\sin\left(x\right)}\right)^{-\frac{1}{x}}$

$4y+3y-z$

$6x+3<x-9$

$\left(-4x^3y^2z^4\right)\left(-9x^4yz^2\right)$