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Sagot :

Bonjour

 A= (2x - 3)(2x + 3) - (3x + 1)(2x - 3)

A = (2x - 3)[(2x + 3) - (3x + 1)]

A = (2x - 3)(2x + 3 - 3x - 1)

A = (2x - 3)(-x + 2)

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