$\frac{x^2+4x^3-x-4}{x^2-1}$
$\sqrt{x}.\sqrt[3]{x^2}$
$25n^2-10nz+z^2$
$05a+05b^2$
$\left(\frac{x}{5}+1\right)\left(\frac{x}{5}-1\right)$
$\int\frac{1}{\left(2t-5\right)^2}dt$
$\sqrt{8}+\sqrt{2}$
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