\(-x^{-y}\)
You have to know that every number to negative power is the inverse, for example:
\(3^{-1}=\frac{1}{3^1}\)
in this exercise we will make the same thing
when \(x=-2~~and~~y=3\)
\(-(-2)^{-3}\)
let's do the inverse
\(-\frac{1}{(-2)^3}\)
now \((-2)^3=-8\)
\(-\frac{1}{-8}\)
doing the signal rule
\(\boxed{\boxed{\frac{1}{8}}}\)
