If f (x) = 2-X1/2 and g (x) = x^2-9, what is the domain of g (x) divided by f (x)

Question

Sullivan Odom

Mathematics

25 October, 03:05

If f (x) = 2-X1/2 and g (x) = x^2-9, what is the domain of g (x) divided by f (x)

+2

Answers (2)

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Danna Jacobs · Answer 1

Danna Jacobs 25 October, 03:17

0

I think it isx1/2=x^2_9

Sydnee Howe · Answer 2

I'm assuming X1/2 is sqrt (x) = x^ (1/2) = x^.5

You have to rationalize the denominator of 2-x^.5 which means multiplying by the conjugate or (2+x^.5) / (2+x^.5) which has a value of 1, so you aren't changing the value at all.

The answer is

(3x^2 - x^2.5 - 9x^.5 - 18) / (4-x)