Answer:
see below
Explanation:
The product of two negative integers is positive
True -*- = +
The product of two integers with different signs is positive
False - *+ = -
Two numbers are the same sign then the product is positive
True -*- = + and +*+ = +
The product of a positive and a negative is negative
True - * + = - and + * - = -
The signs of two integers are different, then the product is positive.
False - * + = - and + * - = -