$\left(5x-2\right)<6$
$\frac{x^{2\:}-4}{5x}.\frac{30}{3x-6}$
$\left(416-4x\right)^2$
$\sec^2x+3\tan x+1$
$\frac{1}{2}-\frac{10}{9x}=\frac{4}{9}-\frac{1}{6x}$
$60x^3+280x^2$
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