3x to the negative second power y to the negative 5th power.

Answer 1

(3x)^-2

y^-5

What is your question?

Answer 2

3x^-2y^-5 = 3 / x^2y^5

or, maybe it is (3x)^-2. in which case it is

1 / 9x^2y^5

when talking math, use math, not words ...

Answer 3

3x^-2 * y^-5 = 3/x^2 * 1/y^5 = 3/x^2y^5.