$$x^5\:e^3x$$

$$\left(18+36\right)+\left(-2\right)$$

$$14x\:+\:10=9x+20$$

$$-5\cdot104$$

$$6x^2y^3z^{12}8x^2y^2z^6$$

$$\lim_{x\to0}\left(\frac{\cot\left(x\right)}{\csc\left(x\right)}\right)\cdot\left(1-\tan\left(2x\right)\right)^{\frac{1}{2x}}$$