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Jesss0610
@Jesss0610
May 2019
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Je devais réduire au mieux l’expression est-ce juste svp ?
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ProfdeMaths1
Verified answer
C(t)=(t-5)²-(√10/2)²
=t²-10t+25-10/4
=t²-10t+22,5
c'est correct !
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jesss0610
Merci bonne journée
MonsieurFirdown
Verified answer
Bonjour
♧ le résonnement et le résultat sont justes en effet (t-5-(√10)/2)(t-5+(√10)/2) est la forme Factorisé de (t-5)² - 10/4 car identité remarquable de la forme (a-b)(a+b) et (t-5)² identité remarquable aussi de la forme (a-b)² = a² - 2ab + b² ...
Voilà ^^
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Verified answer
C(t)=(t-5)²-(√10/2)²=t²-10t+25-10/4
=t²-10t+22,5
c'est correct !
Verified answer
Bonjour♧ le résonnement et le résultat sont justes en effet (t-5-(√10)/2)(t-5+(√10)/2) est la forme Factorisé de (t-5)² - 10/4 car identité remarquable de la forme (a-b)(a+b) et (t-5)² identité remarquable aussi de la forme (a-b)² = a² - 2ab + b² ...
Voilà ^^