Question 74173
(7p+6q)^2

Method 1: Using formula

(a+b)^2 = a^2+2ab+b^2
(7p+6q)^2 = (7p)^2+2(7p)(6q)+(6q)^2

           = 49p^2 + 84pq + 36q^2


Method 2: By multiplying

(7p+6q)^2 = (7p+6q)(7p+6q)

          = 7p(7p) + 7p(6q) + 6q(7p) +(6q)(6q)

         = 49p^2  + 42pq  + 42pq + 36q^2

        = 49p^2 + 84pq + 36q^2



Good Luck!!!