Question

Rationalise it.....

Please give correct solutions​

Answer 1

2√6-√5

3√5-2√6

=> 2√6-√5 × 3√5+2√6

3√5-2√6 3√5+2√6

=> [2√6-√5] [3√5+2√6]

[3√5-2√6] [3√5+2√6]

=> 6√30 +24 -15-2√30

[(3√5)2-(2√6)^2]

-------Using the identity [a+b] [a-b] =a^2 b^2

=> 4√30 +19

45-24

=>4√30+19 is your required answer....

21

Answer 2

Step-by-step explanation:

To solve this question we need to rationalize the denominatior

The denominatior , on rationalising will become 3root5 + 2 root 6

Now multiply the numerator and denominatior with 3root5 + 2root6

Now apply the identity (a+b)(a-b) in the denominatior

On simplifying, we get the product as 4root30+19/21

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