Solve the inequality

(x^2 +1)( x + 4) (x - 3) > 0

Write your answer as an interval or union of intervals.

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(x^2 +1) is postive for all real values of x

so ( x + 4) (x - 3) > 0

x < -4 or x>3

ANSWER

interval notation is ( - ∞ , - 4 ) U ( 3 , ∞ )

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