Exercice n°3 : Factoriser en utilisant l'égalité remarquable a 2 - 5 2 = (a + b)(a - b) J = 49 x 2 - 25
I = 16 x 2.81
= (4 x ) 2 - 9 2
= (4 x + 9) (4 x - 9)
K= 100 t 2 - 4
L=u2 – 64
II
Exercice n°4 : Factoriser
M= 49 a 2 – 70 a + 25
N= 25 b 2 - 36
P= 121 x 2 + 66 x + 9
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roinen a cc on peut m'aider svp factoriser identité remarquables merci beaucoup ​
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