Answer: 
Step-by-step explanation:

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!
Mixed number form:2 1/6 Decimal form:2.16 exact form: 13/6