Answer:
x = 5 or -5
Step-by-step explanation:
if a = b, c^a = c^b
make each side the exponent of 4
4^[log base4 (x+3)(x-3)] = 4^2
since a^(log basea b) = b, (think of the definition of logs as the inverse of exponents here)
(x+3)((x-3) = 16
x^2 -9 = 16x^2 = 25
x = 5 or -5
