Posted by **mike** on Wednesday, March 7, 2007 at 6:36pm.

Can anyone help me with these questions? Please

1. ac - bc + ad - bd

2. xy - 3x - 8y + 24

3. 4x^2 + 20x + 5y +xy

4. 48x^2y + 20xz +12xy + 5z

Do some grouping and factoring. For instance, the first..

ac - bc + ad - bd

(a-b)c + (a-b)d

(a-b)(c+d)