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(2√2 + √8 + √18) ÷ √2

Răspuns :

[tex]\mathtt{\frac{2\sqrt2+\sqrt8+\sqrt{18}}{\sqrt2}=\frac{2\sqrt2+2\sqrt2+3\sqrt2}{\sqrt2}=\frac{7\sqrt2}{\sqrt2}=7}[/tex]