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Devolopper et réduire l'expression : D = (2x + 3)(x+8)-(1-2x+2x²)

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MARINECASSAR
2x x x +2x x 8 +3x x + 3x8 -1 +2x +2x2
(2x + 3)(x+8)-(1-2x+2x*)
=2x*+16+3x+24-1-2x+2x*
=4x*+x+39