1.

सरलीकरण करने पर `1-1/(1+sqrt(2))+1/(1-sqrt(2))` का मान क्‍या होगा?A. `2sqrt(2)-1`B. `1-2sqrt(2)`C. `1-sqrt(2)`D. `-2sqrt(2)`

Answer» Correct Answer - B
`1+1/(1+sqrt(2))+1/(1-sqrt(2))`
`=1-((2sqrt(2)+1))/((sqrt(2)+1)(sqrt(2)-1))-((sqrt(2)+1))/((sqrt(2)-1)(sqrt(3)+1))`
`=1-sqrt(2)+1-sqrt(2)-1=1-2sqrt(2)`


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