Bonjour
Pour x = 1
R = x² - 3x + 2
R = 1² - 3 * 1 + 2
R = 1 - 3 + 2
R = 3 - 3
R = 0
Pour x = - 1
R = (- 1)² - 3 * (- 1) + 2
R = 1 + 3 + 2
R = 4 + 2
R = 6.
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Bonjour
Pour x = 1
R = x² - 3x + 2
R = 1² - 3 * 1 + 2
R = 1 - 3 + 2
R = 3 - 3
R = 0
Pour x = - 1
R = x² - 3x + 2
R = (- 1)² - 3 * (- 1) + 2
R = 1 + 3 + 2
R = 4 + 2
R = 6.