Answer:
-40
Explanation:
You would insert x and the y values in the equation which would be...
2(5)(-4)
Once you simplify it...
10(-4)
you get ten by doing 2 x 5
and simplify it agian..
10 times -4 is -40
The answer is -40
2xy = -40
when x = 5, y= -4
= -40
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