Question

find the following by using identity 1 (7pq+4ab)^2​

Answer 1

Answer:

49p²q²+56abpq+16a²b²

Step-by-step explanation:

1(7pq+4ab)²

(7pq+4ab)²

using(X+y)²=x²+2xy+y²

expand expression

(7pq)²+2*7pq*4ab+(4ab)²

49p²q²+2*7pq*4ab+(4ab)²

49p²q²+56abpq+(4ab)²

49p²q²+56abpq+16a²b²