Răspuns:
[tex]2)continuare \\ n = 2 - \sqrt{3} + 2 \sqrt{3 } - 3 - ( \sqrt{3} - 1) \\ n = 2 - \sqrt{3} + 2 \sqrt{3} - \sqrt{3} + 1 \\ n = 0 - \sqrt{3} + 2 \sqrt{3} - \sqrt{3} \\ n = 0 + 0 \\ n = 0[/tex]
[tex]3)a) \: continuare \\ 28x - 21 + 12x + 27 + 25 = 12x + 32 \\ 28x - 21 + 27 + 25 = 55 + 32 \\ 28x + 31 = 55 + 32 \\ 28x + 31 = 87 \\ 28x = 87 - 31 \\ 28x = 56 \\ x = \frac{56}{28} \\ x = 2[/tex]
