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Puma18
@Puma18
May 2022
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Bonjour, svp aidez moi à résoudre cet exercice de mathématique.
2) Ecrire sous la forme a (racine carrée) 5 les nombres suivants ; tel que le nombre "a" est un nombre entier positif .
[tex] e = \sqrt{1280} [/tex]
[tex]d = 3 \sqrt{125} [/tex]
[tex]c = \frac{ \sqrt{80} }{2} [/tex]
[tex]b = 2 \sqrt{45} [/tex]
[tex]a = \sqrt{20} [/tex]
merci :)
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Legrandu48
Réponse :Explications :Bonjour,e = √1280 = √(256 * 5) = √(16² * 5) = 16√5d = √125 = √(5² * 5) = 5√5c = 1/2 * √80 = 1/2 * √(16 * 5) = 4/2 * √5 = 2√5b = 2 * √45 = 2 * √(9 * 5) = 2 * 3√5 = 6√5a = √20 = √(4 * 5) = 2√5
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Puma18
merci
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