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Frtgy54
@Frtgy54
May 2019
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Bonjour à tous! Hier j'ai déjà poser la question, mais elle est restée malheureusement sans réponse! Je redemande donc de l'aide. Comment je fais pour ramener à des inéquations produits les expressions suivantes:
1) (x+1)*<9
2) (2x-1)*<(1-x)*
*= au carré
Merci pour vos réponses !
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rosiemuller2000
Verified answer
Coucou
1)
(x+1)*<9
x² +2x +1 <9
x² +2x <8
x² < -2x +8
x <
2)
(2x-1)*<(1-x)*
4x² -4x +1 < 1 -2x +x²
3x² < 2x
x² <
x <
voila j'espere t'avoir aider ! :)
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Verified answer
Coucou1)
(x+1)*<9
x² +2x +1 <9
x² +2x <8
x² < -2x +8
x <
2)
(2x-1)*<(1-x)*
4x² -4x +1 < 1 -2x +x²
3x² < 2x
x² <
x <
voila j'espere t'avoir aider ! :)