3a^2b-12a^2-9b + 36
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Answer:
(3a²-9)(b-4)
=3(a²-3)(b-4)
Step-by-step explanation:
3a²b - 12a² - 9b + 36
=3a²(b - 4) -9(b - 4)
=(3a²-9)(b-4)
=3(a²-3)(b-4)
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