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Belin261
@Belin261
April 2019
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Exercice : Développer et réduire
A = (x+5)² + 2 (2x - 1) (x + 1)
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Dreko95
A = (x+5)² + 2 (2x - 1) (x+1)
A = x² + 10x + 25 + (4x - 2) (x + 1)
A = x² + 10x + 25 + 4x X x + 4x X 1 - 2x - 2
A = x² + 10x + 25 + 4x² + 4x - 2x - 2
A = 5x² + 12x + 23
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A = x² + 10x + 25 + (4x - 2) (x + 1)
A = x² + 10x + 25 + 4x X x + 4x X 1 - 2x - 2
A = x² + 10x + 25 + 4x² + 4x - 2x - 2
A = 5x² + 12x + 23