SOLUTION: For what real values of a does the quadratic 4x^2 + ax + 25 have nonreal roots? Give your answer as an interval.

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Question 1022587: For what real values of a does the quadratic 4x^2 + ax + 25 have nonreal roots? Give your answer as an interval.
Answer by FrankM(1040) About Me  (Show Source):
You can put this solution on YOUR website!
B^2-4AC <0 (from quadratic equation, and it's awful that this question has ax as shown)
a^2-400<0
a^2<400
a< +/- 20