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√2-√8 ajutatima varog

Răspuns :

[tex] \sqrt2 - \sqrt{8} = \sqrt{2} - 2 \sqrt{2}= - \sqrt{2} [/tex]
[tex] \boxed{\sqrt{2} - \sqrt{8} = \sqrt{2} (1- \sqrt{4} )= \sqrt{2} (1-2)= \sqrt{2} \cdot (-1)=- \sqrt{2} }[/tex]