Solving a polynomial inequality

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cgureevna

Mathematics

Description

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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Explanation & Answer

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

(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 ,  ∞  ) 

hope you understood..please message if you have any doubts...thank you


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