InterviewSolution
Saved Bookmarks
| 1. |
यदि `m^(4)+1/(m^(4))=119` है तो `m-1/m=?`A. `+-3`B. `4`C. `+-2`D. `+-1` |
|
Answer» Correct Answer - A `m^(4)+1/(m^(4))=119` `m^(4)+1/(m^(4))+2=119+2` `(m^(2)+1/(m^(2)))^(2)=121` `m^(2)+1/(m^(2))=11` `m^(2)+1/(m^(2))-2=11-2` `(m-1/m)^(2)=9` `m-1/m=+-3` |
|