b=(25a-15) +(10ab--6b) reponse svp
Mathématiques
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Question
b=(25a-15) +(10ab--6b)
reponse svp
reponse svp
1 Réponse
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1. Réponse mohayati2006
B=(25a-15) +(10ab--6b)=5(5a-3)+2b(5a-3)
=(5a-3)(5+2b)
B=0
(5a-3)(5+2b)=0
donc a=3/5 ou b=-5/2