Answer:
=3√6−3√5
Explanation:
3√5+√6
We rationalise the denominator by multiplying the expression by the conjugate of the denominator. √5−√6
3⋅(√5−√6)(√5+√6)⋅(√5−√6)
=3⋅(√5)+3⋅(−√6)(√5+√6)⋅(√5−√6)
=3√5−3√6(√5+√6)⋅(√5−√6)
Applying identity
(a+b)(a−b)=a2−b2 to the denominator.=3√5−3√6(√5)2−(√6)2
=3√5−3√65−6
=3√5−3√6−1
=−3√5+3√6
=3√6−3√5
