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What real values of x are not in the domain of 

 

\(f(x)=\frac{1}{|x^2+3x-4|+|x^2+9x+20|}\)?

 

(I think this was answered somwhere else on this website but its wrong so just wanted to repost.)

 

:)

 Apr 14, 2021
edited by TheEarlyMathster  Apr 14, 2021
 #1
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The real values that are not in the domain are 1, -4, and -5.

 May 2, 2021

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