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H950
@H950
January 2021
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Pouvez vous m' aider à montrer que C est un nombre entier svp
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ggdu19
Verified answer
Bonjour,
C=(√5+√10)²-10√2
=(√5)²+2√5√10+(√10)²-10√2
=5+2√(5*10)+10-10√2
=15+2√50-10√2
=15+2*5√2-10√2
=15+10√2-10√2
C=15
1 votes
Thanks 1
H950
Merci beaucoup
ggdu19
Pas de soucis !
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Verified answer
Bonjour,C=(√5+√10)²-10√2
=(√5)²+2√5√10+(√10)²-10√2
=5+2√(5*10)+10-10√2
=15+2√50-10√2
=15+2*5√2-10√2
=15+10√2-10√2
C=15