2/3(4x+2)^2 +1= 9

If it is important, please identify what is numerator and what is denominator.

eg
2/ [3(4x+2)^2] = 8
or
2/ { [3(4x+2)^2] +1 } = 9
or
(2/3)(4x+2)^2 = 8
or whatever