Question

express 1.2bar in the form of rational number(p/q,q) and by using p,q values verify the identity (p-q)^2-p^2 2pq q^2​

Answer 1

1.2bar...11/9

(p-q)^2

(11-9)^2 -(11+9)^2

2^2 - 20^2

4-400

396........