$\frac{8}{x}=\sqrt{\frac{64}{x^2}}$
$\sqrt[4]{16}\cdot\sqrt{9}$
$\left|-3-14+8+1-23\right|$
$3+\frac{x}{2}+\:\frac{1}{\:3}\:\left(x-1\right)-\frac{1}{6}\left(2x-3\right)$
$\left(6+7x\right)^{\frac{2}{x}},\:x=1$
$\left(2cos\left(x\right)-1\right)\left(2cos\left(x\right)-3\right)=0$
$x^2-\frac{4}{x}-2$
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