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Sarahsabrina13
@Sarahsabrina13
May 2019
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Bonjour, je voudrais de l'aide mercii. Résoudre les solution de l'équation :
f(x) = 0.25x² + x -3 = -3
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mohamed20021
Verified answer
0.25 x²+x-3=-3
0.25 x²+x-3+3=0
0.25 x²+x=0
x (0.25x+1)=0
alors x=0 ou 0.25x+1=0
0.25x = -1
x= -1 / 0.25
donc les deux solutions sont
S|R { 0 ; -1/0.25 }
3 votes
Thanks 1
Stiaen
On mettra plutôt -4 au lieu de -1/0.25
mohamed20021
oui merci
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Verified answer
0.25 x²+x-3=-30.25 x²+x-3+3=0
0.25 x²+x=0
x (0.25x+1)=0
alors x=0 ou 0.25x+1=0
0.25x = -1
x= -1 / 0.25
donc les deux solutions sont
S|R { 0 ; -1/0.25 }