Question 494623: Find the domain of the function. (answer in interval notation)
g(x) = x + 2 / x^2 - 25
Answer by lwsshak3(11628)   (Show Source):
You can put this solution on YOUR website! Find the domain of the function. (answer in interval notation)
g(x) = x + 2 / x^2 - 25
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When the denominator=0, the function becomes undefined. So, we set the denominator=0 and find the x-values which make the denominator=0, and these are the x-values excluded from the domain.
..
x^2-25=0
(x+5)(x-5)=0
x=-5
or
x=5
Domain: (-∞,-5) U (-5, 5) U (5, ∞)
number line
<====)-5(=====)5(=====>
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