Answer:

1. X1 = -4 and X2 = 4
2. T1 = -9 and T2 = 9
3. R1 = -12 and R2 = 12
4. -
5. S1 = -5 and S2 = 5
6. X1 = -7.5 and X2 = 7.5
7. (im confused at this one)
8. X1 = -9 and X2 = 17
9. K1 = -24 and K2 = 10
10. S1 = -7 and S2 = 8

(arranged)