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यदि `x=7-4-4sqrt(3)` है ते `(x+1/x)` का मान क्या है?A. `3sqrt(3)`B. `8sqrt(3)`C. `14+8sqrt(3)`D. `14` |
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Answer» Correct Answer - D `x=7-4sqrt(3)` `1/ximplies1/(7-4sqrt(3))` By relationlisation `1/x=1/(7-4sqrt(3))xx(7+4sqrt(3))/(7+4sqrt(3))` `=(7+4sqrt(3))/(49-48)=7+4sqrt(3)` `:. x+1/x=7-4sqrt(3)+7+4sqrt(3)` `=14` |
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