Question
Bonjour ,
pourquoi (n+1)²-n² = "n²"+2n+1-n²=2n+1
d'où viens le n² entre "n²" svp
pourquoi (n+1)²-n² = "n²"+2n+1-n²=2n+1
d'où viens le n² entre "n²" svp
Asked by: USER8735
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