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afla media geometrica a numerelor a=|2radical7-8| si b=|2radical7+8|

Răspuns :

2√7 ? 8 (le comparam)  |²
28 <64⇒ 2√7 <8
a=|2√7-8|=8-2√7

mg=√ab=√(8-2√7)(8+2√7)=√8²-2²x7=√64-28=√36=6