Question

rationalize the denominator of the given expression

Answer 1

4-square root of 6 over 9+3square root of 6
\[4-\sqrt{6} \over 9+3\sqrt{6}\]

Answer 2

One way to do this is use (a-b)(a+b) = (a^2 - b^2) to get rid of the
sqrt(6) in the denominator.