3/a - 4 + 2/a + 3 - 21/a^2 - a - 12
Combine like terms:
(3 + 2) / a - (4 + 3) - 21 / a^2 - a - 12
5 / a - 7 - 21 / a^2 - a - 12
Therefore, the simplified expression is:
5 / a - a - 21 / a^2 - 19
Simplify
3/a-4 + 2/a+3 -21/a²-a-12
3 answers
as usual, the user's carelessness with parentheses made you mess up -- though it should have been easy to figure it out. Clearly the user meant
3/(a-4) + 2/(a+3) - 21/(a²-a-12) = 5/(a+3)
3/(a-4) + 2/(a+3) - 21/(a²-a-12) = 5/(a+3)
Apologies for the oversight. Thank you for pointing that out. The correct simplification of the expression is:
3/(a-4) + 2/(a+3) - 21/(a²-a-12) = 5/(a+3)
3/(a-4) + 2/(a+3) - 21/(a²-a-12) = 5/(a+3)