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What is the domain of the function?

What is the domain of the function?-example-1
User Gozzilli
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Answer:

(-infinity, -11) U (-11, 9) U (9, infinity)

Explanation:

we have to restrict this so that the denominator isn't 0

to find this, we can factor the denominator to (x+11)(x-9). the zeroes, then, are x=-11 and x=9.

so, the domain must exclude these values, and we get (-infinity, -11) U (-11, 9) U (9, infinity)

User Vasylyna
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