Ответ:
- а) \(\sqrt{50^2-14^2}=\sqrt{(50-14)(50+14)}=\sqrt{2304}=48\).
- б) \(\sqrt{(61^2-60^2)/81}=\sqrt{121/81}=11/9\).
- в) \(\sqrt{34^2-16^2}=\sqrt{(34-16)(34+16)}=\sqrt{900}=30\).
- г) \(\sqrt{(74^2-24^2)/121}=\sqrt{4900/121}=70/11\).
- д) \(\sqrt{2.9^2-2.1^2}=\sqrt{(2.9-2.1)(2.9+2.1)}=\sqrt4=2\).
- е) \(\sqrt{(6.2^2-5.9^2)/2.43}=\sqrt{(36.43-34.81)/2.43}=\sqrt{1.62/2.43}=\sqrt{2/3}\).
Ответ: а) 48; б) 11/9; в) 30; г) 70/11; д) 2; е) \(\sqrt{2/3}\).
