$1-\cos\left(0\right)$
$4n+5=33$
$9y^2+84y$
$2\left(-4y^2+2xy+\left(x+2y\right)^2\right)$
$\lim_{x\to\frac{1}{3}}\left(\frac{ln\:3x}{3x-1}\right)$
$2\left(5x+1\right)-x=10+x$
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