$v^2+4v+3$
$x^2+3x=3$
$x^2-34x+289$
$\frac{x}{\left(x-3\right)^2\left(2x+1\right)}$
$3\left(x-2\right)^2<x\left(x-4\right)+8$
$0.125\cdot36$
$f\left(x\right)=\frac{2x\:+4}{x+20}$
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