Combien ça fait :
x²-9x = -20
svp aidez moi je n'y arrive pas

By: USER5333
26 Agustus 2025 mathematiques 5 minutes
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Question

Grade: Education Subject: mathematiques
Combien ça fait :
x²-9x = -20
svp aidez moi je n'y arrive pas
Asked by:
71 Viewed 71 Answers

Answer (71)

Best Answer
(117)
x²-9x = -20
x²-9x+20=0
(x-4)(x-5)=0
x-4=0 ou x-5=0
x=4 ou x=5
Answered on 26 Agustus 2025

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