Question

Select a suitable identity and find out the product.
(2a-3b) (2a-3b)​

Answer 1

Step-by-step explanation:

$(2a - 3b)(2a - 3b) \\ \\ = (2a - 3b {)}^{2} \\ \\ {a}^{2} + {b}^{2} - 2ab \\ \\ = {(2a)}^{2} + ({3b)}^{2} - 6ab$

Answer 2

Using the identity

(a+b) (a-b) = a² - b²

here a=2a; b= -3b

(2a-3b) (2a-3b) = (2a)² - (3b)²

= 4a² - 9b²