#### susan pearson

##### New member

- Joined
- Aug 16, 2006

- Messages
- 9

z-2 + 5 - z + 2

------------- ------------- -------------

x^2 + 4z + 4 4z^2 - 16 2x^2 - 4z

x^2 + 4z + 4 (2z + 4)(2z - 4) 2(x^2 - 2z)

Where am I going wrong or is this really as far as I can factor these and I need to find the LCD from these?