Question

1.-15
2. -48
3. -36
4. -35
5.
6. 16 negative factors. That means 25 - 16 = 9 factors are positive. Let's get rid of all the positive factors. If we multiplied each of the 9 positive factors by 9 negative factors, you should end up with a negative number. There are an odd amount of negative numbers being multiplied. We used up 18 factors, all 9 positive factors included. Now, we're left with 25 - 18 = 7 negative factors. We have our current negative numbers. If we multiplied 7 negative numbers, we'll get a positive number.
7. If 16 of the factors are negative, then there are 8 sets of tw