F(x)=2x(в квадрате)-х

[latex]2 x^{2} - x = 0[/latex] [latex]2 x^{2} - x = 0[/latex] [latex]x_1 = 0[/latex] и [latex]2 x - 1 = 0 \\ 2 x = 1 \\ x_2 = \frac{1}{2} [/latex]