Bonjour,
Calculer Au lorsque t = -1/3
A = t² - 2t + 1
A = (-1/3)² - 2*(-1/3) + 1
A = 1/9 - (-2/3) + 1
A = 1/9 + 2/3 + 1
A = 1/9 + 6/9 + 1
A = 7/9 + 1
A = 7/9 + 9/9
A = 16/9 ✅
* = multiplication
Bonne journée
