Question

If p+q =12and pq=22,then find p^+q^

Answer 1

Answer:

(p+q)^2=p^2+q^2+2pq

(12) ^2=p^2+q^2+2*22

144=p^2+q^2+44

144-44=p^2+q^2

100=p^2+q^2