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What is the domain of the function

f(x) = (2x - 3)(2x + 5)/((x - 9)(x + 9)) 

Express your answer as an interval or as a union of intervals.

 Jun 21, 2022
 #1
avatar+124676 
+1

Any x that makes the denominator =  0    is not in the domain

 

So

x = 9    and x =  -9  are not in the domain

 

Domain  = 

 

(-inf , -9) U (-9, 9)  U  (9 , inf)

 

 

cool cool cool

 Jun 22, 2022

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