Apply the product rules to determine the sign of each expression.

Multiplication is the process of multiplying, therefore, adding a number to itself for the number of times stated. The product of a positive and a negative integer is always negative.
Multiplication is the process of multiplying, therefore, adding a number to itself for the number of times stated. For example, 3 × 4 means 3 is added to itself 4 times, and vice versa for the other number.
As per the product rule:
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