Answer:
9+sqrt(14)
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9+sqrt(14)
Explanation:
When we rationalize the denominator, we need to multiply by the conjugate
The denominator has a-sqrt(b), we multiply by a+sqrt(b)
Since we have 9 -sqrt(14), we need to multiply by 9+sqrt(14)
What we do to the bottom, we do to the top, so multiply by 9+sqrt(14) over 9+sqrt(14) which is equal to 1. This does not change the equation.
9+sqrt(14)
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9+sqrt(14)