bonjour
x² - 2 x + 2
α = - ( -2)/2 = 2/2 = 1
β = 1 - 2 + 2 = 1
x² - 2 x + 2 = ( x - 1)² + 1
- 5 x² - 6 x + 1
α = - ( -6) / - 10 = - 6/10 = - 3/5
β = - 5 ( 9/25) + 18/5 + 1 = - 45/25 + 90/25 + 25/25 = 70/25 = 14/5
- 5 x² - 6 x + 1 = - 5 ( x + 3/5)² + 14/5
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bonjour
x² - 2 x + 2
α = - ( -2)/2 = 2/2 = 1
β = 1 - 2 + 2 = 1
x² - 2 x + 2 = ( x - 1)² + 1
- 5 x² - 6 x + 1
α = - ( -6) / - 10 = - 6/10 = - 3/5
β = - 5 ( 9/25) + 18/5 + 1 = - 45/25 + 90/25 + 25/25 = 70/25 = 14/5
- 5 x² - 6 x + 1 = - 5 ( x + 3/5)² + 14/5