$645.007+64.123$

$\lim_{x\to infinity}\left(846\left(\frac{2}{3}\right)^x\right)-\left(396\left(\frac{1}{3}\right)^x\right)$

$\int\frac{x-1}{x^2+7x+10}dx$

$2x^2-3x\:+\:8$

$\sec\left(a\right)=\tan\left(a\right)\cdot\csc\left(a\right)$

$\left(x+3\right)\left(x+4\right)\ge\left(x+4\right)\left(x-4\right)$

$\left(2x-i\right)\left(2x+i\right)=0$