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यदि `n=7+4sqrt(3)` है तो `(sqrt(n)+1/(sqrt(n)))` का मान ज्ञात करें।A. `2sqrt(3)`B. `4`C. `-4`D. `-2sqrt(3)` |
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Answer» Correct Answer - B `n=7+4sqrt(3)` `n=4+3+4sqrt(3)` `n=(2)^(2)+(sqrt(3))^(2)+2xx2xxsqrt(3)` `n=(2+sqrt(3))^(2)` `sqrt(n)=2+sqrt(3)` `:. 1/(sqrt(n))=2-sqrt(3)` `sqrt(n)+1/(sqrt(n))=2+sqrt(3)+2-sqrt(3)=4` |
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