Question

cum se face?
$( \frac{ \sqrt{8} }{2} - \frac{1}{2} ) {}^{2}$
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Answer 1

$\frac{8}{2} - \frac{1}{2} = \frac{7}{2}$Radicalul la puterea a 2 = cu numărul fara radical

Ex: √2² = 2