$\left(3+n\right)^5$
$9x^2+18x+1$
$25\cdot25$
$\int\cos\frac{x}{3}\tan\frac{x}{3}dx$
$c\:+\:c\:+\:c\:+\:c\:-\:8c$
$\left(x-1\right)^2=2x$
$-\frac{x^2}{x^2+1}+\frac{x^4+1}{x^4-1}$
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