Question

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.

Answer 1

denom cannot be zero so w cannot be 4

Answer 2

assuming this is \[\frac{7}{w-7}\]

Answer 3

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

Answer 4

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

Answer 5

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

Answer 6

Thank you, again. :)

Answer 7

You are welcome again.