CBSE Class 9 Answered
solution
![question image](http://images.topperlearning.com/topper/new-ate/top_mob162208366210932949788661ca16-35c6-4d5e-8e19-0f9139832e7e.jpg)
Asked by vray77795 | 27 May, 2021, 08:17: AM
![begin mathsize 16px style fraction numerator 7 square root of 3 minus 5 square root of 2 over denominator square root of 48 plus square root of 18 end fraction
equals fraction numerator 7 square root of 3 minus 5 square root of 2 over denominator square root of 16 cross times 3 end root plus square root of 9 cross times 2 end root end fraction
equals fraction numerator 7 square root of 3 minus 5 square root of 2 over denominator 4 square root of 3 plus 3 square root of 2 end fraction
Rationalising space the space denominator
equals fraction numerator 7 square root of 3 minus 5 square root of 2 over denominator 4 square root of 3 plus 3 square root of 2 end fraction cross times fraction numerator open parentheses 4 square root of 3 minus 3 square root of 2 close parentheses over denominator open parentheses 4 square root of 3 minus 3 square root of 2 close parentheses end fraction
equals fraction numerator open parentheses 7 square root of 3 minus 5 square root of 2 close parentheses open parentheses 4 square root of 3 minus 3 square root of 2 close parentheses over denominator open parentheses 4 square root of 3 close parentheses squared minus open parentheses 3 square root of 2 close parentheses squared end fraction
equals fraction numerator open parentheses 7 square root of 3 minus 5 square root of 2 close parentheses open parentheses 4 square root of 3 minus 3 square root of 2 close parentheses over denominator 48 minus 18 end fraction
equals fraction numerator open parentheses 7 square root of 3 minus 5 square root of 2 close parentheses open parentheses 4 square root of 3 minus 3 square root of 2 close parentheses over denominator 30 end fraction end style](https://images.topperlearning.com/topper/tinymce/cache/03468b48d3b12ff0e8cf05022ad3932c.png)
Answered by Yasmeen Khan | 28 May, 2021, 00:19: AM
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