21
The factor pairs of 36 are (36, 1) (18, 2) (12, 3) (9, 4) (6, 6) None of them add up to 9. If that was -36, you could use 12 and -3
-20
0
168
It is: -6 and -6
21
The factor pairs of 36 are (36, 1) (18, 2) (12, 3) (9, 4) (6, 6) None of them add up to 9. If that was -36, you could use 12 and -3
4 and 9
-16
2 x 10 = 20 2 + 10 = 12
-20
23
0
168
20
-12