Question

Factorise a^2 - 9. Workings please

Answer 1

Any ideas?

Answer 2

Have you learned what the difference of two squares looks like?

Answer 3

$$\Huge a^2-b^2$$

Answer 4

Do you want to learn math? @sucker4math

Answer 5

I think he got the Idea, then closed it

Answer 6

oh he posted new question