Solve the inequality 2x2 +4x ≥ 6. [a] x ∈ (−∞,1] [b] x ∈ (−∞,−3] or x ∈ [1,+∞) [c] x ∈ [−3,1] [d] x ∈ (−∞,1] or x ∈ [−3,+∞)

Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter2: Working With Real Numbers
Section2.9: Dividing Real Numbers
Problem 11MRE
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Solve the inequality 2x2 +4x ≥ 6.

[a] x ∈ (−∞,1]

[b] x ∈ (−∞,−3] or x ∈ [1,+∞)

[c] x ∈ [−3,1]

[d] x ∈ (−∞,1] or x ∈ [−3,+∞)

 

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