Question

I want to how to verify it

Answer 1

This is the required answer.
I hope it helps....

Answer 2

H.C.F.(p,q)=a2b

L.C.M.(p,q)=a3b2

L.C.M.(p,q)×H.C.F.(p,q)=a5b3

pq=a5b3

Therefore, L.C.M.(p,q)×H.C.F.(p,q)=pq.