See the explanation
Remember you have to write complete questions in order to get good and exact answers. In this exercise, you haven't provided any expression so I can't help you in a exact way, but in a general one. So let's see how to obtain an expression whose product is positive:
So if you have two real numbers [tex]a \ and \ b[/tex] then there are four possibilities:
[tex]\bullet \ Case \ 1: \ a>0 \ and \ b>0 \\ \\ ab=Positive \ number \\ \\ \\ \bullet \ Case \ 2: \ a<0 \ and \ b<0 \\ \\ ab=Positive \ number \\ \\ \\ \bullet \ Case \ 3: \ a>0 \ and \ b<0 \\ \\ ab=Negative \ number \\ \\ \\ \bullet \ Case \ 4: \ a<0 \ and \ b>0 \\ \\ ab=Negative \ number[/tex]
So both case 1 and 2 meet our requirements meaning that the product of two numbers will result in a positive number if the two numbers are positive OR both numbers are negative.
Associative property: https://brainly.com/question/13378777
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