9x² - 1 - (3x - 2)² = 0

Expand the squared term: $$9x^2 - 1 - (9x^2 - 12x + 4) = 0$$.

Simplify the equation: $$9x^2 - 1 - 9x^2 + 12x - 4 = 0$$, which becomes $$12x - 5 = 0$$.

Solve for x: $$12x = 5$$, so $$x = \frac{5}{12}$$.