Question

4.
Find the value of a,if pq2a=(4pq+3q)2-(4pq-3q)2​

Answer 1

Answer:

(4pq+3q)2−(4pq−3q)2=48pq2

LHS=(4pq)2+2(4pq)(3q)+(3q)2−[(4pq)2−2(4pq)(3q)+(3q)2]

       =16p2q2+24pq2+9q2−16p2q2+24pq2−9q2

       =48pq2

           =RHS

LHS=RHS

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