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Aflati daca rezultatul expresiilor este numa rational sau irational
1 supra √2-3,. (√2+√3)(√8-√12)


Răspuns :

[tex]\dfrac{1}{\sqrt2}-3=\dfrac{\sqrt2}2-3=\dfrac{\sqrt2-6}3,\ este\ ira\c{t}ional;\\\\(\sqrt2+\sqrt3)(\sqrt8-\sqrt{12})=\sqrt{16}-\sqrt{24}+\sqrt{24}-\sqrt{36}=4-6=-2,\ care\;este\;ra\c{t}ional.[/tex]

Green eyes.