For the example in the explanation the result is:
[tex]\boxed{E=-1}[/tex]
Hello! remember to write complete questions in order to find good and exact answers. Here you haven't provided any expression so I'll help you writing an expression. Suppose your expression is:
[tex]E=XY^2+2Y+X[/tex]
So in order to know the value of our expression E, we need to substitute both x and y in it, so:
[tex]E=XY^2+2Y+X \\ \\ E=(-1)(2)^2+2(2)-1 \\ \\ E=-4+4-1 \\ \\ \boxed{E=-1}[/tex]
Distributive property: https://brainly.com/question/10794694
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