Question

(38xy) ^-2/7

Answer 1

What is the question?

Answer 2

rewrite the follow expression with a positive exponent

Answer 3

Ok. Then you just need to invert the equation. The principle is
(x)^-a = 1/((x)^a)
so, your equation will become
1/((38xy)^2/7)
Be aware that the exponent is now in the denominator. I'll make a simpler example:
(2)^-2 = 1/(2^2) = 1/4

Answer 4

so this is the answer

Answer 5

Yup!