$\left(a^3+2\right)^2$

$\frac{\cos\:\left(4\theta\right)}{\sin\:\left(\theta\right)}-\frac{\sin\:\left(4\theta\right)}{\cos\:\left(\theta\right)}=\frac{\cos\:\left(5\theta\right)}{\sin\:\left(\theta\right)\cos\:\left(\theta\right)}$

$x-a^2x$

$2\:cot\:x\:+\:tan\:x\:+1$

$700^2$

$\log\left(\frac{y^7}{\sqrt{xz^3}}\right)$

$a^{\left(10\right)}a^{\left(-3\right)}a^{\left(-9\right)}a^{\left(7\right)}$