Question

Factorised form of 4a² - 9b² is ​

Answer 1

Step-by-step explanation:

(2a)^ - (3b)^

(2a-3b) (2a+3b)

Answer 2

Answer:

$a^{2} - b^{2} = (a + b)(a - b) \\ {4a}^{2} - 9 {b}^{2} = (4a^2 + 9b^2)(4a^2 - 9b^2) \\ = 4a^2 (4a^2 - 9b^2) + 9b^2 (4a^2 - 9b^2)\\ = 16a^4 - 36ab^2 + 36ab^2 - 81b^4\\ = 16a^4 - 81b^4$