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Q.

Rationalise the denominator of the following- If Question Image is Question Image, then Question Image is


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a

 Question Image

b

 Question Image

c

 Question Image

d

 Question Image

answer is A.

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Detailed Solution

Concept- Rationalisation is the process which is used to eradicate the radical part (under root or imaginary part) from the denominator. In this we simply multiply and divide the given fraction with the radical part which we have to eliminate.
Given that,
Rationalisation of Question Image is Question ImageQuestion ImageQuestion ImageQuestion ImageComparing both the sides,
Question ImageNow, squaring both the sides
We get Question ImageHence, the correct answer is option (1) .
 
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