Question

Factorise a² - 16n²

Answer 1

a^2 - 16n^2

= (a)^2 - (4n)^2

= (a - 4n) ( a + 4n)

Answer 2

Answer:

(a-4n)(a+4n)

Step-by-step explanation:

$a^2  - 16n^2\\= (a)^2 - (4n)^2\\= (a-4n)(a+4n)$