$\frac{\left(x+1\right)}{\left(5x+1\right)}\ge2$
$3ab-2ab^2$
$\left(3+8w^2\right)^2$
$-4\left(-1-5n\right)$
$x^2+2x^3+1$
$\frac{1}{n\left(n-1\right)}$
$\frac{sin\left(\theta\:\right)}{sec\left(\theta\:\right)+1}$
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