Question : If $(y-\frac{1}{y})=8$, find the value of $(y^2+\frac{1}{y^2})$.
Option 1: 64
Option 2: 62
Option 3: 60
Option 4: 66
Recommended: How to crack SSC CHSL | SSC CHSL exam guide
Don't Miss: Month-wise Current Affairs | Upcoming government exams
Answer (1)
23rd Jan, 2024
Correct Answer: 66
Solution :
Given, $(y-\frac{1}{y})=8$
Squaring both sides, we get:
$y^2+\frac{1}{y^2}-2(y)(\frac{1}{y})=64$
⇒ $y^2+\frac{1}{y^2}=64+2$
⇒ $y^2+\frac{1}{y^2}=66$
Hence, the correct answer is 66.
Comments (0)
Related Questions
Know More about
Staff Selection Commission Combined High ...
Answer Key | Eligibility | Application | Admit Card | Preparation Tips | Result | Cutoff
Get Updates Brochure
Thank You!
Your Staff Selection Commission Combined Higher Secondary Level Exam brochure has been successfully mailed to your registered email id “”.
Upcoming Exams
Application Date:
31 Jan, 2026
- 9 Mar, 2026
Mains Exam
Result Date:
2 Mar, 2026
- 1 Apr, 2026
Exam Date:
22 Mar, 2026
- 22 Mar, 2026
