3x² - 6x - 3 = - 3
3x² - 6x - 3 + 3 = 0
3x² - 6x = 0
a = 3 b = - 6 c = 0
∆ = b² - 4 . a . c
∆ = (- 6)² - 4 . 3 . 0
∆ = 36 - 0
∆ = 36
x = - b ± √∆
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
2 . a
x = - (- 6) + √36
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
2 . 3
x = 6 + 6
¨¨¨¨¨¨¨¨¨¨¨¨
6
x' = 6 + 6
6
x' = 12 ÷ 6
x' = 2
x" = 6 - 6
2
x" = 0 ÷ 2
x" = 0
Resposta: {2, 0}
