[tex](2x + 3)(2 - 6x) - 3(x - 2)(x - 2) = x[/tex]
[tex]4x - 12 {x}^{2} + 6 - 18x - 3( {x}^{2} - 2x - 2x + 4) = x[/tex]
[tex] - 12 {x}^{2} + 6 - 14x - 3( {x}^{2} - 4x + 4) = x[/tex]
[tex] - 12 {x}^{2} + 6 - 14x - 3 {x}^{2} + 12x - 12 = x[/tex]
[tex] - 15 {x}^{2} - 2x - 6 - x = 0[/tex]
[tex] - 15 {x}^{2} - 3x - 6 = 0[/tex]
[tex]15 {x}^{2} + 3x + 6 = 0[/tex]
[tex]delta \: = 9 - 4 \times 15 \times 6 = 9 - 360 = - 351 < 0[/tex]
brak pierwiastków
