To simplify the expression:
First, factor out common terms from each numerator and denominator:
3a²/ab - 4b² - 12a/a - 4b=> 3a/a a/b - 4b b - 12a/a - 4b=> 3/b - 4b² - 12 - 4b
Now, combine like terms:
=> 3/b - 4b² - 4b - 12
Therefore, the simplified expression is 3/b - 4b² - 4b - 12.
To simplify the expression:
First, factor out common terms from each numerator and denominator:
3a²/ab - 4b² - 12a/a - 4b
=> 3a/a a/b - 4b b - 12a/a - 4b
=> 3/b - 4b² - 12 - 4b
Now, combine like terms:
=> 3/b - 4b² - 4b - 12
Therefore, the simplified expression is 3/b - 4b² - 4b - 12.