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