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Sagot :

AYUDA

bonjour

1ere colonne

si x = 9 => x² = 9² = 9*9 = 81

et √9 = 3

2eme colonne

si x² = 16 => x = √16 = 4   (puisque x positif)

et √4 = 2

3eme colonne

si √x = 5

alors √x² = x = 5² = 25

et x² = 25² = 625

:)

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