$\left(a^x+a^{-x}\right)\left(a^{2x}-1+a^{-2x}\right)$
$2x-3\ge x+2$
$-3x\le15$
$\lim_{x\to-1}\left(\frac{2}{1-\left|x\right|}\right)$
$22-4+7-\left(5+4-3\right)$
$\sqrt[6]{t}-\:\frac{1}{\sqrt[6]{t}}$
$5x\sqrt{28x^5}+8x\sqrt[3]{7x}$
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