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Desfaceti parantezele:[tex]( \sqrt{3} +7)( \sqrt{3} -7)[/tex]

Răspuns :

(√3+7)(√3-7)=√(√3)²-7²=√3-49= -√46
[tex](\sqrt{3}+7)(\sqrt{3}-7) = (\sqrt{3})^2 -7^2 = \\\\ =3 -49 \longrightarrow \boxed{-46}[/tex]