Question

doar b ul va rog urgenttt dau coroana

Answer 1

Răspuns:

$\sqrt{ {(4 - \sqrt{7}) }^{2} } = |4 - \sqrt{7} |$

$\sqrt{ {( \sqrt{7} - 2)}^{2} } = | \sqrt{7} - 2|$

$|4 - \sqrt{7} | = 4 - \sqrt{7}$

$| \sqrt{7} - 2| = \sqrt{7} - 2$

deci

$4 - \sqrt{7} + \sqrt{7} - 2 = 2$