$\frac{x^2-4x-2}{4-x^2}-1\ge0$
$\left(4y+3\right)^0$
$1+6+8-87x$
$\sqrt{2n}^2$
$n2-8+16$
$\int\sqrt[5]{\sqrt{x}+1}dx$
$-145-500$
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