$\lim_{x\to1}\left(\frac{t-\sqrt{t}}{\sqrt{t-1}}\right)$

$340x+270y=2475$

$-3\cdot\:\left(-5\right)^2-\sqrt{6+2\cdot\:\left(-3\right)^0-\left(-2\right)^3}$

$\left(10b+5\right)^2$

$\int\:sec\:\left(4x+1\right)\:tan\:\left(4x+1\right)\:dx$

$-9\left(6-3\right)$

$\left(p+2\right)\left(p-2\right)$