$\left(-x^2-2x+20\right)\left(-x^2-2x+20\right)$
$\sqrt[3]{x^2}-9\:\:x\frac{2}{3}$
$\sqrt[6]{x}^{17}$
$4+5-3-2\cdot4+3-2$
$\left(x+3\right)^511$
$-\left(-1\right)+\left(1\right)-\left(-1\right)-\left(1\right)+\left(1\right)$
$\cos\left(x\right)+\left(1+\sqrt{2}\right)\cdot\sin\left(x\right)-1=0$
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