I need help with surds?

Question

what is root 6 over 2 root 5 - 3 root 2?

I know that you have to rationalize the denominator but what do i multiply them by?

Answer 1

multiply it with 2√5 + 3√2

so that would become

√6(2√5+3√2)

___________

(2√5-3)^2

= 2√30 + 3√12

   ___________

     11