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Bonjour
E = (2x-3)²-(2x-3)(x+8)
E = 4x²-12x+9-2x²-16x+3x+24
E = 2x²-25x+33
factoriser
E = (2x-3)(2x-3-x-8)
E = (2x-3)(x-11)
pour x = 3/2)
E=( 6/2 - 3)(3/2 - 11)= (3-3)(3-11) = 0
E = (2x-3)²-(2x-3)(x+8)
E = 4x²-12x+9-2x²-16x+3x+24
E = 2x²-25x+33
factoriser
E = (2x-3)(2x-3-x-8)
E = (2x-3)(x-11)
pour x = 3/2)
E=( 6/2 - 3)(3/2 - 11)= (3-3)(3-11) = 0