Answer:
The options 1,2 and 4 are correct.
Explanation:
The given rational expression

From the given expression it is noticed 12 is a term in both the numerator and denominator. Option 1 is correct.
The denominator has 3 terms. Option 4 is correct.



From the above expression it is clear that (x+2) is a factor of the numerator. Option 2 is correct.
Therefore options 1,2 and 4 are correct.