Question

If a^2+1/a^2=66 then find the value of the value of a if a>1.

Answer 1

Answer:

8

Step-by-step explanation:

(x−x1)²=x²+x²1−2×x×x1

                   =x²+x21−2

 (x−x1)²=66−2=64

⇒(x−x1)=8