factorise a² - 9b² - 12ab - 4
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Answer:
(a+3b)(a-3b)(3a+1)(-4)
Step-by-step explanation:
Answered by
0
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
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