je dois développer : (racine carré de 5+2)²

merci

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Grade: Education Subject: mathematiques

je dois développer : (racine carré de 5+2)²

merci

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(128)

[tex](\sqrt{5}+2)^2 = 5 + 2\times2\sqrt{5} + 4 = 9 + 4\sqrt{5}[/tex]

 

En espérant t'avoir aidé.

(146)

(V5+2)²

= (V5)² + 2² + 2(V5)(2)

= 5 + 4 + 4V5

= 4V5 + 9