Question 92226
{{{-9(x-3)^2=-7}}}
First, work with the exponent
{{{-9(x^2-6x+9)=-7}}}
Distribute the 9
{{{-9*x^2+54*x-81=-7}}}
Subtract 7 from both sides
{{{-9*x^2+54*x-74=0}}}
Now you can use quadratic formula to finish solving 
*[invoke quadratic "x", -9, 54, -74]
Good luck!