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Solve the polynomial inequality: 4x² + 19x - 5 ≤ 0

User Jumel
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1 Answer

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Answer:

4x² + 19x - 5 ≤ 0

4x²+20x-x-5≤ 0

per factorization :

4x(x+5)-1(x+5)≤0

(x+5)(4x-1)≤0

x+5≤0

x≤-5

x-4≤0

x≤4

x[-5, 1/4]