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

User Bogdan Timofeev
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1 Answer

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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!
User Bubak
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