If p and q are positive and p2q2 = 18 – 3pq, then p2 =
Subsitute q=1, the equation reduces to p2+18−3p=0. Solving this, we get p = -6 & p=3. Hence, p2= 9 (As p is positive)
Substitute the value of q=1 in answer options to see where you get p2= 9. Answer is option (d)