Question

The area of the square is 4x^2+12xy+9y^2.Find the side of the square.

Answer 1

answer in above image

Answer 2

$= 4 {x}^{2} + 12xy + 9 {y}^{2} \\ = (2x)^{2} + 2x + 3y + (3y)^{2} \\ = (2x + 3y)^{2}$
here 2x+ 3y are common