What is the lowest common denominator
3/a-4 + 2/a+3 -21/a²-a-12
No, there is no a factor in the denominator
Apologies for the mistake. Let's find the lowest common denominator again.
The denominators are a-4, a+3, and a^2-a-12. To find the lowest common denominator, we need to factorize a^2-a-12 to get (a-4)(a+3).
Therefore, the lowest common denominator is (a-4)(a+3).