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