$\lim_{x\to0}\left(\frac{\cos\left(8x\right)-1-32x^2}{x^2}\right)$
$x ^ { 3 } + 2 x ^ { 2 } + x + 2$
$172,58+17,73$
$35-123+\left(-23\right)$
$-2x+10\le20$
$3^2x-49$
$\sqrt{182.25}$
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