Bonjour
Factoriser :
(x+1)² - 4
= (x + 1)² - (2)²
= (x + 1 - 2) (x + 1 + 2)
= (x - 1) (x + 3).
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Bonjour
Factoriser :
(x+1)² - 4
= (x + 1)² - (2)²
= (x + 1 - 2) (x + 1 + 2)
= (x - 1) (x + 3).