Ok so we need to find out the different kinds of variables/constants.
1st kind: -a
2nd kind: -b
3rd kind: 1
4th kind: ab
-a and -b are different because they are different variables, and since their value is not known, you can't add or subtract them together.
-a, -b, and 1 are not the same because -a and -b are variables and their value is unknown. However, 1 is a constant, and it's value is constant and known.
-a, -b, and ab are different because ab are "fused together" (multiplied) and that means you cannot add them separately.
So this expression cannot be factorized.
♡ Hope this helps! ♡
❀ 0ranges ❀
