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Solve the Quadratic Inequality x2+18x+76≥0x ^ { 2 } + 18 x + 76 \geq 0

Question 151

Multiple Choice

Solve the quadratic inequality. Write the solution set in interval notation.
- x2+18x+76≥0x ^ { 2 } + 18 x + 76 \geq 0


A) [−9−5,−9+5][ - 9 - \sqrt { 5 } , - 9 + \sqrt { 5 } ]
B) (−∞,−9−5]∪[−9+5,∞) ( - \infty , - 9 - \sqrt { 5 } ] \cup [ - 9 + \sqrt { 5 } , \infty )
C) (−∞,−9−5) ∪(−9+5,∞) ( - \infty , - 9 - \sqrt { 5 } ) \cup ( - 9 + \sqrt { 5 } , \infty )
D) (−∞,−5]∪[5,∞) ( - \infty , - \sqrt { 5 } ] \cup [ \sqrt { 5 } , \infty )

Correct Answer:

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