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if x = -8 and y =9 what is xy 

 Sep 2, 2020
 #1
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Does it cost that much to multiply? Maybe a few seconds...

 

As you see, variables can be replaced, anytime, anywhere. So...we replace the x and y in the xy with the values defined. Maybe I'm being a little too "professional" for your tastes, but here is what I am trying to say:

 

xy = -8 * 9

 

What did we do, you may ask? We replaced the variables with the defined values!

 

Assuming you know how to multiply:

 

-8 * 9 = -72

 

And there we go! 
 

:)

 Sep 2, 2020

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