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?
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. 8
B. 16
C. `2sqrt(15)`
D. `2(sqrt(5)+sqrt(3))`
4 views
1 Answers
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`
4 views
Answered