Question

Factorize

`a {}^(2) - 9b {}^(2)`
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Answer 1

1^2 (a-9b)

Not sure but hope it helps :)

Answer 2

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

Explanation:

a² - 9b²

(a)² - (3b)²

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