$4\left(3\right)^4-4\left(-2\right)^4$

$\frac{ds}{dt}=-3.5\left(s\right)\left(i\right)$

$\frac{\sec^4\left(\theta\right)}{cot^2\left(\theta\right)csc^5\left(\theta\right)}$

$c\left(7x-1\right)$

$8cot^2x+12cot\:x-8$

$\sqrt[9]{32^{-3}.64^5.2^3}$

$\frac{\left(-3\right)^{n+1}}{4^{n-1}}$