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```
if z^2+z+1=0 then find the value of (z+1/z)^2 +(z^2+1/z^2)^2
if z^2+z+1=0 then find the value of (z+1/z)^2 +(z^2+1/z^2)^2

```
3 years ago

Arun
25768 Points
```							Z² + z +1 = 0HenceZ is w or w²Let z= w in the question(w + 1/w)² + (w² +1/w²)²= (w +w²)² + (w² + w) ²= (-1)² + (-1)²= 1 +1 = 2
```
3 years ago
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### Course Features

• 101 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions