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Yumi0
@Yumi0
April 2019
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J'ai vraiment besoin d'aide.
2x-3 ≤ 2+4x
3-5x ≥ 1+X
(1-2x) au carré > 4x au carré.
Résoudre dans IR les inéquations suivantes et donner l'ensemble des solutions à l'aide d'un intervalle.
Merci!!
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danielwenin
Verified answer
2x-3 ≤ 2+4x => 2x >= -5 => x >= -5/2 S = [-5/2 ; infini
3-5x ≥ 1+X => 6x <= 2 => x <= 1/3 S = -infini; 1/3]
(1-2x)² - 4x² > 0 => 1 + 4x² - 4x - 4x² > 0 => 1 - 4x > 0 => x < 1/4 S = -infini;1/4[
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Verified answer
2x-3 ≤ 2+4x => 2x >= -5 => x >= -5/2 S = [-5/2 ; infini3-5x ≥ 1+X => 6x <= 2 => x <= 1/3 S = -infini; 1/3]
(1-2x)² - 4x² > 0 => 1 + 4x² - 4x - 4x² > 0 => 1 - 4x > 0 => x < 1/4 S = -infini;1/4[