## anonymous 5 years ago Find all numbers for which the rational expression is undefined. 7/w-4 I should know this, but for some reason, it's escaping me. Please help. Thank you.

1. anonymous

denom cannot be zero so w cannot be 4

2. anonymous

assuming this is $\frac{7}{w-7}$

3. anonymous

we will only have 1 answer for this and that is 4.

4. anonymous

That's what I thought, but I wasn't sure.

5. anonymous

Always analyze the problem or given first, and try to solve it by using different means.

6. anonymous

Thank you, again. :)

7. anonymous

You are welcome again.