Développer les formes canoniques
f (x) = 8(x - 4/3)² + 10
= 8(x² - 8/3 + 16/9) + 10
= 8 x² - 64/3) x + 128/9 + 10
= 8 x² - 64/3) x + 218/9
g(x) = 1/2(x + 3)² - 5
= 1/2(x² + 6 x + 9) - 5
= 1/2) x² + 3 x + 9/2 - 5
= 1/2) x² + 3 x - 1/2
= 1/2(x² + 6 x - 1)
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Développer les formes canoniques
f (x) = 8(x - 4/3)² + 10
= 8(x² - 8/3 + 16/9) + 10
= 8 x² - 64/3) x + 128/9 + 10
= 8 x² - 64/3) x + 218/9
g(x) = 1/2(x + 3)² - 5
= 1/2(x² + 6 x + 9) - 5
= 1/2) x² + 3 x + 9/2 - 5
= 1/2) x² + 3 x - 1/2
= 1/2(x² + 6 x - 1)