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Rgrah Rgrah
  • 30-10-2015
  • Mathematics
Answered

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

Verified Answer :

caramirez57
caramirez57 caramirez57
  • 30-10-2015

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!

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