SOLUTION: List all numbers for which the rational expression is undefined. (b-8)/(8b-32) i dont understand this question

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Question 302189: List all numbers for which the rational expression is undefined.
(b-8)/(8b-32)
i dont understand this question
Found 2 solutions by Alan3354, metalgal:
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
(b-8)/(8b-32)
If the denominator is zero (0) the expression is undefined.
Find what value of b makes the den = 0
8b-32 = 0
b = 4
That's all
You can sub any other number for b and the expression is defined, but not 4.

Answer by metalgal(1) About Me  (Show Source):
You can put this solution on YOUR website!
oooo ok thanks