C. SUBTRACT THE FOLLOWING POLYN
1. (-3ab)-(2ab)
2. 3kl - Skl=
3. (2rs)-(-5rs)
4. (-52 -3) - (2s2 + 10s) =
5. (5x2 - 2x - 1) - (3x2- 5x + 7) =
6. (-3z2 + 4z) - (622- 2)=
7. (6x3 - 4x2 + x - 9) - (3x2 + 7x + 3)=​