SOLUTION: I need help with something probably simple. I need to find all the numbers for which the rational expression is not defined on this problem 7 / 8v+9 . I am having the hardest tim

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: I need help with something probably simple. I need to find all the numbers for which the rational expression is not defined on this problem 7 / 8v+9 . I am having the hardest tim      Log On


   

Question 238615: I need help with something probably simple. I need to find all the numbers for which the rational expression is not defined on this problem 7 / 8v+9 . I am having the hardest time with this and I am sure that it is simple for others. Thank You so much.
Found 2 solutions by jim_thompson5910, stanbon:
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
The expression isn't defined when the denominator is equal to zero. So solve 8v%2B9=0 to get v=-9%2F8. So if v=-9%2F8, then the expression 7%2F%288v%2B9%29 is undefined.

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
find all the numbers for which the rational expression is not defined on this problem 7 / 8v+9
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That fraction is undefined when the denominator is zero.
When is it zero?
8v+9 = 0
when 8v = -9
when v = -9/8
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The expression is undefined when v = -9/8
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Cheers,
Stan H.