Find all real values of that satisfy the equation (x^2 - 81)^2 = 324. If you find more than one, then list the values separated by commas.
(x^2 - 81)^2 = 324
x^2 - 81 = 17
x^2 = 98
x = +-sqrt(98)
x^2 - 81 = -17
x^2 = 64
x = +- 8
=^._.^=
