Question

factorize
$a {}^{2} - 9b {}^{2}$
​

Answer 1

1^2 (a-9b)

Not sure but hope it helps :)

Answer 2

Answer:

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

Step-by-step explanation:

a² - 9b²

(a)² - (3b)²

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