Find the following by using identity 1 (7pq+4ab)^2 – InterviewSolution

1.

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

Answer»

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

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