Question

Ex 18 va rog frumos
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Answer 1

media geometrica este rad(a×b)
*unde rad=radical*
$(\sqrt{2} + 1) \times ( \sqrt{2} - 1) \times( \sqrt{3} + \sqrt{2} ) \times \sqrt{3} - \sqrt{2} )$
avem formula (a-b)(a+b)=a^2-b^2.
rad(a×b)=rad(2-1+3-2+...+6-5)=rad(1×5)=rad5.
Sper ca te am ajutat!:)