InterviewSolution
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InterviewSolution
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यदि `x=(sqrt(5)+sqrt(3))/(sqrt(5)-sqrt(3))` और `(sqrt(5)-sqrt(3))/(sqrt(5)+sqrt(3))` है तो `(x+y)` का मान क्या है?A. 8B. 16C. `2sqrt(15)`D. `2(sqrt(5)+sqrt(3))` |
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Answer» Correct Answer - A `x=(sqrt(5)+sqrt(3))/(sqrt(5)-sqrt(3))xx(sqrt(5)+sqrt(3))/(sqrt(5)+sqrt(3))implies((sqrt(5)+sqrt(3))^(2))/2` `implies` Similarly `y=(sqrt(5)-sqrt(3))/(sqrt(5)+sqrt(3))implies((sqrt(5)-sqrt(3))^(2))/2` `implies x+y` `implies(5+3+2sqrt(15)+5+3-2sqrt(15))/2` `implies16/2=8` |
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