Bonsoir,
Exercice 1
On considère l'expression
A = x² - 2x + 2.
Calculer l'expression A pour :
a) x = 0
A = x² - 2x + 2
A = 0² - 2 * 0 + 2
A = 0 - 0 + 2
A = 2
b) x = 1
A = x² - 2x + 2.
A = 1² - 2 * 1 + 2
A = 1 - 2 + 2
A = 1
c) x = 3
A = x² - 2x + 2
A = 3² - 2 * 3 + 2
A = 9 - 6 + 2
A = 5
d) x = - 3
A = x² - 2x + 2
A = (- 3)² - 2 * (- 3) + 2
A = 9 + 6 + 2
A = 17