Exercice 2 a (3x + 1)(3x - 1); c (2x + 5)(2x - 5); C b (4-7xX4+7x): d (5+2x)(5-2x);
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Question
Exercice 2 a (3x + 1)(3x - 1); c (2x + 5)(2x - 5); C b (4-7xX4+7x): d (5+2x)(5-2x);