Odpowiedź :
- 2 (x - 3)^2 - 2 = 0
- 2 (x^2 - 6 x + 9) - 2 = 0
- 2 x^2 + 12 x - 18 - 2 = 0
- 2 x^2 + 12 x - 20 = 0 /: (- 2)
x^2 - 6 x + 10 = 0
- 2 (x - 3)^2 - 2 = 0
- 2 (x^2 - 6 x + 9) - 2 = 0
- 2 x^2 + 12 x - 18 - 2 = 0
- 2 x^2 + 12 x - 20 = 0 /: (- 2)
x^2 - 6 x + 10 = 0