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Answer:
0
Step-by-step explanation:
So we have the expression:

And we want to evaluate it for x=-4 and y=8.
So, substitute:

Multiply:

Add:

Evaluate:

So, our answer is 0.
And we're done!
Answer:
3x-2
Step-by-step explanation:
12x-8/4 = 3x-2 is one side length of a square