Question

A is the product of 5 positive integers and b is the product of 9 negative integers

Answer 1

Answer:

Make it as simple as possible, and use 1 and −1 .

1×1×1×1×1×−1×−1×−1×−1×−1=

15×(−1)2×(−1)2×−1=

1×1×1×−1=

−1.