The product of 4 numbers, a,b, c,and d, is a negative number the table shows one combination of positive and negative signs of the four numbers that could produce a negative product. complete the table to show seven other possible combinations.

When you multiply numbers, two negative signs cancel each other out. Therefore if four of the numbers are negative the product is positive. If either one or three numbers are negative, the product is negative.
   
1.a negative, b positive, c positive, d positive
   
2.a positive, b negative, c positive, d positive
   
3.a positive, b positive, c negative, d positive
   
4.a positive, b positive, c positive, d negative
   
5.a positive, b negative, c negative, d negative
   
6.a negative, b positive, c negative, d negative
   
7.a negative, b negative, c positive, d negative
   
8.a negative, b negative, c negative, d positive