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Sagot :

AYUDA

bjr

entre A et B = xa - xb = 4 - (-5) = 4 + 5 = 9

entre A et C = xa - xc = 4 - (-3) = 4 + 3 = 7

et

BC = xc - xb = -3 - (-5) = - 3 + 5 = 2

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