[tex]a = ( \sqrt{5} - \sqrt{3} ) \sqrt{8} + 2 \sqrt{15} [/tex]
[tex]a = \sqrt{40} - \sqrt{24} + 2 \sqrt{15} [/tex]
[tex]a = 2 \sqrt{10} - 2 \sqrt{6} + 2 \sqrt{15} [/tex]
[tex]a = 2( \sqrt{10} - \sqrt{6} + \sqrt{15}) [/tex]
--------
[tex]b = ( 2\sqrt{3} + 2) \sqrt{16} - 8 \sqrt{3} [/tex]
[tex]b = 2 \sqrt{48} + 2 \sqrt{16} - 8 \sqrt{3} [/tex]
[tex]b = 2 \times 4 \sqrt{3} + 2 \times 4 - 8 \sqrt{3} [/tex]
[tex]b = 8 \sqrt{3} + 8- 8 \sqrt{3} [/tex]
[tex]b = 8[/tex]
-----------
media geometrica a nr. a și b:
[tex]mg = \sqrt{a \times b} [/tex]
[tex]mg = \sqrt{2( \sqrt{10} - \sqrt{6} + \sqrt{15}) \times 8 } [/tex]
[tex]mg = \sqrt{16( \sqrt{10} - \sqrt{6} + \sqrt{15}) } [/tex]
[tex]mg = 4 \sqrt{ \sqrt{10} - \sqrt{6} + \sqrt{15} } [/tex]
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Sper ca te am ajutat!!