Help with Trig problem?

Question

I have to simplify xy^-3. would it be x/y^-3 or 1/xy^-3? or am i completely off? I know its not trig, we're just reviewing

Answer 1

this is x to the first power times y to the minus third power, and is written equivalently as:

x/y^3

Answer 2

simplify  xy^-3

y^-3 means: 1/y^3

so

x*1/y^3

=x/y^3 "answer"

another example:

x*y^-2.45

=

x/y^2.45