Question 73393
{{{ 9x^2y^-2 }}}
x=-3 y=2
Plug these values in for x and y
{{{ 9(-3^2)(2^-2) }}}
When a number has a negative exponent, it becomes it's own reciprocal and the exponent becomes positive, and ONLY that value moves ... everything elses stays put.
ex: {{{  x^-3 = 1/x^3 }}}  {{{ 2/7x^-5 = 2x^5/7 }}}  
{{{ 9(-3^2)/2^2 }}}
work your exponents
{{{ 9(9)/4 }}}
Multiply
{{{ 81/4 }}}
Divide or reduce as needed.  If your instructer accepts improper fractions, make sure you reduce it.  This IS fully reduced.