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Alvite
@Alvite
May 2019
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Bonjour, alors voilà j'aurais besoin d'aide pour ne factorisation et une résolution d'inéquation.
Voici l'énoncé.
On donne A(x) = (2x + 3)² - (x - 1)²
Factoriser et en déduire la résolution de l'inquation A(x) < ou = 0
Merci d'avance.
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Verified answer
Bonjour,
(2x + 3)² - (x - 1)²
[(2x+3)-(x-1)][(2x+3)+(x-1)]=
(2x+3-x+1)(2x+3+x-1) =
(x+4)(3x+2)
x=4 =
x =-4
3x+2 =0
3x =-2
x =-2/3
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Verified answer
Bonjour,(2x + 3)² - (x - 1)²
[(2x+3)-(x-1)][(2x+3)+(x-1)]=
(2x+3-x+1)(2x+3+x-1) =
(x+4)(3x+2)
x=4 =
x =-4
3x+2 =0
3x =-2
x =-2/3