$x+x^{-1}=6$
$4x\left(x-3\right)+4x+3x^2-5$
$\left(\cos\left(0.5\right)x\right)^2+\left(\sin\left(0.5\right)x\right)^2$
$e^{x^2}=4$
$\frac{2\sqrt{x}-4}{\sqrt{2\left(x-2\right)}-2}$
$\left(-0.008\right)^{\frac{2}{3}}$
$3\sqrt{cot\left(x-10\right)}=4$
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