Question

If x=(5-root21)/2, then find value of (i) x+1/x (ii)x2+1/x2

Answer 1

page no 34 of your book

Answer 2

Answer:

(i) 1

(ii) 1

Step-by-step explanation:

(i) x+1/x=x=(5-root21)/2+1/x=(5-root21)/2

x=(5-root21)/2 gets cancelled and one remains