Question

factorise a² - 9b² - 12ab - 4​

Answer 1

Answer:

(a+3b)(a-3b)(3a+1)(-4)

Step-by-step explanation:

Answer 2

Answer:

Step-by-step explanation:

a²-9b²-12ab-4

u have to keep plus instead of -

question should be like

a²plus9b²-6ab

[a-3b]²

please mark as brainlest answer

this is my first answer