Question

(7x+2y)2 expand the following
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Answer 1

Answer:

= (7x + 2y)^2

= (7x)^2 + 2*7x*2y + (2y)^2

= 49x^2 28xy + 4y^2

Answer 2

Here is your answer! :)

Given (7x+2y)²

According to the identity (a + b)² = a² + 2ab + b²

We have to expand now

(7x + 2y)² = (7x)² + 2(7x) + 2(7x)(2y) + (2y)²

(7x + 2y)²= 49x² + 28xy + 4y²