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What happens if you are checking a solution for the rational expression and find that it makes one of the denominators in the e...Asked by kathy
What happens if you are checking a solution for the rational expression and find that it makes one of the denominators in the expression equal to zero?
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Answered by
Reiny
It means that the expression is undefined for that particular solution.
e.g.
suppose we have the expression (x+5)/(x^ - 4) and we are given that x = 2
we could get
7/0 , which is undefined
so we would state the expression as
(x+5)/(x^2 - 4) , x ≠ ± 2
e.g.
suppose we have the expression (x+5)/(x^ - 4) and we are given that x = 2
we could get
7/0 , which is undefined
so we would state the expression as
(x+5)/(x^2 - 4) , x ≠ ± 2
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