Bonjour,
Pouvez-vous m’aider :
Factoriser en utilisant au préalable une identité remarquable.
A=x²-4+ (x+2)(x+3)
B = x² +6x+9− (x+3)(x − 1)
C = (3x-2)(x+5) +9x² - 4
D=9x² −1+(3x + 1)(2x + 3)
E = x² - 4x + 4+ (x+3)(x - 2)
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