(3X+1)² = 6(3x+1)+3
9X² + 6X + 1 = 18X + 9
9X² - 12X - 8 = 0
(9X² - 12X + 4) - 4 - 8 = 0
(3X - 2)² = 12
3X - 2 = ± 2√3
3X = 2 ± 2√3
X = (2 ± 2√3) / 3
(3X+1)² = 6(3x+1)+3
9X² + 6X + 1 = 18X + 9
9X² - 12X - 8 = 0
(9X² - 12X + 4) - 4 - 8 = 0
(3X - 2)² = 12
3X - 2 = ± 2√3
3X = 2 ± 2√3
X = (2 ± 2√3) / 3