Question

if x2 -8x+1=0, x2+1/x2​

Answer 1

Answer:

62

Step-by-step explanation:

let the given equation has roots x=A  and x=B

then clearly, A+B =8 and AB=1

LETS FIND A^2 +1/A^2...

in the second term, Substitute B = 1/A

so we have A^2 + B^2

write it as... (A+B)^2 - 2AB = 8^2 - 2 = 62

Answer 2

Answer:

62

Step-by-step explanation:

(A+B)^2 - 2AB = 8^2 - 2 = 62