Question

упростите выражение √(5-√7)^ + √(2--√7)^2

Answer 1

$\sqrt{(5-\sqrt{7})^{2} } +\sqrt{(2-\sqrt{7})^{2}}=|5-\sqrt{7}|+|2-\sqrt{7}|=5-\sqrt{7}+\sqrt{7}-2=3$

Answer 2

=|5-√7|+|2-√7|=5-√7+√7-2=5-2=3

5>√7

2<√7