Odpowiedzi

2011-07-29T18:06:32+02:00
  • Roma
  • Community Manager
2011-07-29T18:15:39+02:00

 

(2x + 3)² - 3 = (2x - 4)² - 6x
4x² + 12x + 9 - 3 = 4x²- 16x + 16 - 6x
4x² + 12x + 6 = 4x² - 22x + 16

4x² + 12x + 6 - 4x² + 22x -  16 = 0
34x - 10 = 0
34x = 10 /:34
x = ¹⁰/₃₄

x = ⁵/₁₇