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निम्नलिखित व्यंजको को सरल कीजिए : (i)...

निम्नलिखित व्यंजको को सरल कीजिए :
(i) `(5+sqrt(7))(2+sqrt(5)) " "(ii) (5+sqrt(5))(5-sqrt(5))`
`(iii) (sqrt(3)+sqrt(7))^(2) " "(iv)(sqrt(11)-sqrt(7))(sqrt(11)+sqrt(7))`

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