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yousraabdenebi
@yousraabdenebi
May 2022
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Bonjour aidez moi à développer et réduire cette expression SVP :
(x -7) * (3x - 8) -4 * (2x + 2)
* = fois
x = nombre inconnu
Merci d'avance !!
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ayuda
bsr= x * 3x + x * (-8) - 7 * 3x - 7 * (-8) - 4 * 2x - 4 * 2= 3x² - 8x - 21x + 56 - 8x - 8reste à réduirecar(a+b) (c+d) = ac + ad + bc + bdet k (a+b) = ka + kb
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MargeSimpson1
Bonsoir.Développer puis réduire := (x-7)(3x-8)-4(2x+2)= 3x²-8x-21x+56-4(2x+2)= 3x²-8x-21x+56-8x-8= 3x²-37x+56-8= 3x²-37x+48Bonne soirée.
1 votes
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