1. Factor x 2 – 2w + wx – 2x by grouping. 2. Find the remainder when x 3 + 2x – 5 is divided by x – 3. 3. An army of ants is marching across the kitchen floor. If they form columns with 10 ants in...

1. Factor x²
– 2w + wx – 2x by grouping.

2. Find the remainder when x³
+ 2x – 5 is divided by x – 3.

3. An army of ants is marching across the kitchen floor. If they form columns with 10 ants in each column, then there are 6 ants left over. If they form columns with 7, 11, or 13 ants in each column, then there are 2 ants left over. What is the smallest number of ants that could be in this army?