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Question
Divide: 9a4b - 15a3b2 + 12a2b3 by - 3a2b
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Solution
9a4b - 15a3b2 + 12a2b3 by - 3a2b
`= (9"a"^4"b" - 15"a"^3"b"^2 + 12"a"^2"b"^3)/("- 3a"^2"b")`
`= "9a"^4/(- 3"a"^2"b") - (15"a"^3"b"^2)/(- 3"a"^2"b") + (12"a"^2"b"^3)/(- 3"a"^2"b")`
= - 3a2 + 5ab - 4b2
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