Answer:
Explanation:
So we have the expression:
And we want to evaluate it for x=6 and y=-2.
Thus, substitute:
Let's do the numerator first:
Cube the first term and subtract under the radical:
Simplify:
Add:
Now, do the denominator:
Multiply:
Simplify and add:
Remove the absolute value bars:
So, together:
Reduce:
And that's our answer: :)