(x2 y2 )-1
Simplify and write the equation with positive exponents
A negative exponent means that the information in parenthesis should be moved to the other side of the fraction (from numerator to denominator or from denominator to numerator).
Since x2y2 is being taken to the -1 power, both the x2 term and the y2 term should be moved to the denominator.
The answer is: