Question

please answer must be with explanation and please if you don't know answer don't type anything ​

Answer 1

Answer:

answer is 3

Step-by-step explanation:

x+1/x=✓5

square on both sides

(x+1/x)^2=(✓5)^2

x^2+1/x^2+2×x×1/x=✓25

x^2+1/x^2+2=5

x^2+1/x^2=5-2

x^2+1/x^2=3