Question

factorise
(2x+3y)^2 -9​

Answer 1

Answer:

16xy

Step-by-step explanation:

(2x+3y) ^2-9

5xy^2-9

25xy-9

16xy

Answer 2

Answer:

$( {2x + 3y})^{2} - 9 \\ = ( {2x})^{2} + 2 \times 2x \times 3y + ({3y})^{2} - 9 \\ = {4x}^{2} + 12xy + {9y}^{2} - 9$