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Taabatmoha
@Taabatmoha
May 2019
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Bonjour
Qui peux m'aide a résoudre cette équation de 4 eme degré?
2(x + 4)4 + 11(x + 4)2 − 30 = 0
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gsantha
Verified answer
Bonjour
2(x + 4)4 + 11(x+4)2 - 30 = 0
<=> 8(x + 4) + 22(x + 4) - 30 = 0
<=> (8*x+8*4) + (22*x+22*4) - 30 = 0
<=> 8x + 32 + 22x + 88 - 30 = 0
<=> 30x + 90 = 0
<=> 30x = -90
<=> x = -90/30
<=> x = (-90/30) / (30/30)
<=> x = -3
Voilà j'espère avoir pu t'aider ^^
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Verified answer
Bonjour2(x + 4)4 + 11(x+4)2 - 30 = 0
<=> 8(x + 4) + 22(x + 4) - 30 = 0
<=> (8*x+8*4) + (22*x+22*4) - 30 = 0
<=> 8x + 32 + 22x + 88 - 30 = 0
<=> 30x + 90 = 0
<=> 30x = -90
<=> x = -90/30
<=> x = (-90/30) / (30/30)
<=> x = -3
Voilà j'espère avoir pu t'aider ^^