$\lim_{x\to3}\left(\frac{\left(\tan\left(\pi x\right)-0\right)}{\left(x-3\right)}\right)$

$\frac{\left(3x\right)^3+\left(2y\right)^3}{3x+2y}$

$\left(m^7\right)^0$

$\left(1-\cos\left(40\right)\right)\left(1-\cos\left(80\right)\right)\left(1-\cos\left(160\right)\right)$

$-4\:.\:\left(\:-9\:+\:7\:\right)\:=\:\:\:\:$

$3\sqrt{2}+7\sqrt{2}-5\sqrt{2}$

$\frac{da}{dt}=-10a+80t$