Bonjour,
E=(3x+2)²-(5-2x)(3x+2)
=(3x+2)(3x+2)-(5-2x)(3x+2)
=(3x+2)(3x+2-(5-2x))
=(3x+2)(3x+2-5+2x)
E=(3x+2)(5x-3)
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Bonjour,
E=(3x+2)²-(5-2x)(3x+2)
=(3x+2)(3x+2)-(5-2x)(3x+2)
=(3x+2)(3x+2-(5-2x))
=(3x+2)(3x+2-5+2x)
E=(3x+2)(5x-3)