$\left(x^2.x\right).e^{\frac{1}{x-4}}$

$2\cdot\sin\left(x\right)-\csc\left(x\right)\:=1$

$\log w=3$

$\left(3a+5b\right)\left(3a+6d\right)$

$16m^6-12m^4$

$8-1.263$

$\lim_{x\to0}\left(\frac{2\tan\left(x\right)-\sin\left(x\right)}{\sin\left(2x\right)-\sin\left(x\right)}\right)$