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Media aritmetica (RADICAL5) -2 si (radical5) + 2
Rpd


Răspuns :

ma=a+b|2
ma=√5-2+√5+2|2⇒
ma=2√5|2⇒ma=√5
succes
ma = [(√5 - 2) + (√5 + 2)]÷2 = (√5 + √5)÷2 = 2√5 ÷ 2 = √5