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va rog repede √18-√8:2

Răspuns :

\|18-\|8÷2

=3\|2-2\|2÷2

=3\|2-\|2

=2\|2

[tex]\it \sqrt{18}-\sqrt8:2=\sqrt{9\cdot2}-\sqrt{8\cdot2}:2=3\sqrt2-2\sqrt2:2=3\sqrt2-\sqrt2=2\sqrt2[/tex]