Question

(3×-1)²=1 alguem sabe resolver?

Answer 1

(3x-1)² = 1
9x² - 6x + 1 =1
9x² - 6x = 0
x(9x-6) = 0

x = 0

ou

9x - 6 = 0
9x = 6
x = 6/9
x = 2/3

$\boxed{S=\left \{ 0;\, \frac{2}{3} \right \}}$