Question

Ifpqa = (3p + q) ^ 2 - (3p - q) ^ 2 then a is equal to : (a) 3 (b) 6 (c) 12 (d) 15​

Answer 1

Answer:

c] 12

Step-by-step explanation:

(3p+q)^2-(3p-q)^2

9p^2+6pq+q^2-(9p^2-6pq+q^2)

9p^2+6pq+q^2-9p^2+6pq-q^2

12pq