Question

Explicitati modulul |2-√10I
I√7-2√2 I
I√22-3√2 I
va rog mult explicati

Answer 1

$| \sqrt{7} - \sqrt{8} | = - \sqrt{7} + \sqrt{8} \\ \\ | \sqrt{22} - \sqrt{18} | = \sqrt{22} - \sqrt{18} \\ \\ | 2- \sqrt{10} | = | \sqrt{4} -\sqrt{10}| = - \sqrt{4}+\sqrt{10}$

Answer 2

$|2- \sqrt{10} |= \sqrt{10} -2 \\ | \sqrt{7} -2 \sqrt{2} |=2 \sqrt{2} - \sqrt{7} \\ | \sqrt{22} -3 \sqrt{2} |= \sqrt{22} -3 \sqrt{2}$