Question

(x+1/x) = 3 then (x²+1/x²) ??​

Answer 1

Answer:

Step-by-step explanation:

(x+1/x)=3

(x+1/x)²=x²+1/x²+2*x*1/x

3²=x²+1/x²+2

9=(x²+1/x²)+2

(x²+1/x²)=9-2

(x²+1/x²)=7