x²+1/x²=14 then find the value of x-1/x
Answers
Answered by
1
Answer:
Step-by-step explanation:
- x² + 1/x² = (x - 1/x )² + 2 ·x · 1/x
⇒ 14 = (x - 1/x )² + 2
⇒ ( x - 1/x) ² = 12
∴ x - 1/x = √12 = 2√3.
Similar questions