Question

$x-\frac{1}{x}=2$ ആയാൽ $x^2+\frac{1}{x^2}=?$

• A. 10
• B. 8
• C. 6
• D. 4

Answer 1

Answer:

C. 6

if x-1/x =k then x²+ 1/x² = k² + 2 here k=2 then k²+2 = 2²+2 = 6