$$2x^{3\:+\:16}$$

$$3=5+4\cos\left(2x\right)$$

$$log6\left(12\right)\:+\:log6\left(18\right)$$

$$\left(k^{11}\right)^{-3}$$

$$\frac{1}{2}\sec\left(x\right)\csc\left(x\right)$$

$$\lim_{x\to3}\left(\frac{\left(x\right)-3}{x+1}\right)$$

$$\frac{12x-27}{3}$$