Svolgimento:
[math](\sqrt{15}+\sqrt3)^2-\sqrt5(\sqrt9+5\sqrt2)-\sqrt(50)(\sqrt2-\sqrt5)=[/math]
[math]=15+3+2\sqrt{45}-\sqrt5(3+5\sqrt2)-5\sqrt2(\sqrt2-\sqrt5)=[/math]
[math]=15+3+6\sqrt5-3\sqrt5-5\sqrt{10}-10+5\sqrt{10}[/math]
Semplificando si ha che[math]=15+3+6\sqrt5-3\sqrt5-5\sqrt{10}-10+5\sqrt{10}=8+3\sqrt5[/math]
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