A. Directions: Completely factor the following.
1. 4m2 – 64
2. y 4 – z 4
3. 10c2 – 1000
4. 63 + 42m + 7m2
5. -m2 – 6m – 9
6. 18a2 - 12ab + 8b2
7. 2m2 – 32
8. 16y4 – 81z4 9. 4c2 – 400
10. 45 + 30m + 5m2 11. 3m2 + 18m + 27
12. 36a2 - 24ab + 16b2

pls help i need now