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AidenSouthPark
@AidenSouthPark
May 2022
2
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Bonjour/Bonsoir!
Je souhaiterais de l'aide avec les exercices ci-joint.
Merci énormément!
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unlegendaryfra
Réponse :2)C=3(2x-5)+(2x-5)(4x+1)C=(3+4x+1)(2x-5)3)D=(4x-5)(3x+2)D=12x²+8x+(-15x)+(-10)D=12x²-7x-10E=2x(6x+4)-5(3x+2)E=12x²+8x-(15x+10)E=12x²+8x-15x-10E=12x²-7x-10donc D=E
2 votes
Thanks 0
AidenSouthPark
merci beaucoup
MargeSimpson1
Bonjour,2) Factoriser :C = 2x(2x - 5) + (2x - 5)(4x + 1)Facteur commun → (2x - 5)C = (2x - 5)(2x + 4x + 1)C = (2x - 5)(6x + 1)3) Montrer que les expressions D et E sont égales :Double distributivité → (a + b)(c + d) = ac + ad + bc + bdD = (4x - 5)(3x + 2)D = 4x × 3x + 4x × 2 - 5 × 3x - 5 × 2D = 12x² - 7x - 10E = 2x(6x + 4) - 5(3x + 2)E = 12x² + 8x - 15x - 10E = 12x² - 7x - 10On peut dire que D = EBonne journée.
1 votes
Thanks 1
AidenSouthPark
merci beaucoup
MargeSimpson1
Avec plaisir ☺️
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