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dianatavares
@dianatavares
June 2021
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Pouvez vous m'aider svp c'est pour demain (2n+5)(2n-5)
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Thomas1106
(2n+5)(2n-5)
Cette expression est de la forme (a+b)(a-b) avec a = 2n et b = 5
Rappel :
(a+b)(a-b) = a²-b²
(2n+5)(2n-5) = (2n)²-(5)² =
4n²-25
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Lista de comentários
Cette expression est de la forme (a+b)(a-b) avec a = 2n et b = 5
Rappel : (a+b)(a-b) = a²-b²
(2n+5)(2n-5) = (2n)²-(5)² = 4n²-25