- 1. (6x3 - 4x2 + x - 9) - (3x2 + 7x + 3)
- 2. (3a2 + 2a - 2) - (a2 - 3a + 7)
- 3. -(3z2 + 4z) - (6z2 - 2)
- 4. (-s2 - 3) - (2s2 + 10s)
- 5. (5x2 - 2x - 1) - (3x2 - 5x + 7)
- 6. 3(c – 4) – 5(c2 + 4c – 8)
- 7. (6x2 – 5x + 4) – (10x2 – 4x + 7)
- 8. (12x + 7y) - (-x + 2y)
- 9. (4x2 – 7x + 5) – (x2 + 11x – 9)
- 10. (3x2 + 7x – 6) - (-x2 – 11x + 15)
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