в) 3x(2x+3) = 2x(x+4,5)+2;

в) $$3x(2x+3) = 2x(x+4,5)+2$$

$$6x^2 + 9x = 2x^2 + 9x + 2$$

$$6x^2 - 2x^2 + 9x - 9x - 2 = 0$$

$$4x^2 - 2 = 0$$

$$4x^2 = 2$$

$$x^2 = \frac{2}{4}$$

$$x^2 = \frac{1}{2}$$

$$x_1 = \frac{\sqrt{2}}{2}$$

$$x_2 = -\frac{\sqrt{2}}{2}$$

Ответ:$$x_1 = \frac{\sqrt{2}}{2}$$, $$x_2 = -\frac{\sqrt{2}}{2}$$