That sounds like two different questions. The factors for -144 are 1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144 and their negatives. The prime factors are 2 and 3. -16 and 9 add up to -7.
They are: 49+144 = 193
The two square numbers that add up to 225 are 144+81 = 225
Factors are multiplied, not added. The question needs to be something like, "Which two factors of thirty add up to 11?" The answer would then be 5 and 6.
-134
7
-32
The factors of -35 are 1, -1, 5, -5, 7, -7, 35, -35 No two of them add up to -13.
-144
119
-3 and 16.
-90 and 3