$\tan\left(x\right)+\:\frac{\cos\left(x\right)}{1+\sin\left(x\right)}$
$\left(\tan^2\left(x\right)\right)\cos\left(x\right)\csc\left(x\right)$
$\left(p+3\right)\left(p+1\right)$
$6x^7+30x^3$
$\left(60-x\right)^2$
$\frac{\sqrt{x+\sqrt{r}}}{\sqrt{x}}$
$\sqrt{3+\sqrt{6+5\sqrt{36}}}$
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