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guajiro [1.7K]
3 years ago
14

The expression x-7 divided by 9-x^2 is undefined when x is????

Mathematics
2 answers:
maw [93]3 years ago
6 0
You have x-7/ 9-x^2. 
An expression is undefined when the denominator = 0.
What value is x to make 9-x^2 = 0?
Maybe 3?
3^2 = 9
9-9 =0

Hope this helps! 
alisha [4.7K]3 years ago
4 0
If this helps at all, the problem can equal out to 0 if x=7, hope this helps. :)
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