Question

4a square+12ab+9b square​

Answer 1

Step-by-step explanation:

4a²+12ab+9b²

(2a)²+2(2a)(3b)+(3b)²

This is in the form of (x+y)²=x²+2xy+y²

so (2a)²+2(2a)(3b)+(3b)² can be written as (2a+3b)²

Answer 2

$4 {a}^{2} + 12ab + 9 {b}^{2} \\ = (2 {a)}^{2} + 2.2a.3b + 3 {b}^{2} \\ = (2a + 3 {b)}^{2}$