(k + 1/k) ^2 =36

Question

what is k^2 + (1/k)^2

34?

Answer 1

(k+ 1/k)^2
= k^2 + 2(K)(1/k) + (1/k) = 36

k^2 + (1/k)^2 + 2 = 36

so k^2 + (1/k)^2 = 34

you are correct

Answer 2

Thanks