Răspuns :
media a doua numere = suma lor / 2
media = √72 / 2 = √(36×2) / 2 = 6√2 / 2 = 3√2
media = √72 / 2 = √(36×2) / 2 = 6√2 / 2 = 3√2
a+b= v—72 (v—= radical)
(a+b)/2=v—72/2 (/=supra)
(a+b)/2= (6v—2))/2 = 3v—2
(a+b)/2=v—72/2 (/=supra)
(a+b)/2= (6v—2))/2 = 3v—2