Advertisements
Advertisements
Question
If `x^2 + 1/x^2` = 11, then `x - 1/x` is equal to:
Options
2
3
5
4
MCQ
Advertisements
Solution
3
Explanation:
`x^2 + 1/x^2` = 11
`x - 1/x = sqrt((11) - 2)` = 3
shaalaa.com
Algebra (Entrance Exam)
Is there an error in this question or solution?
