Question

2x^2-x-3=0 /////////////////////

Answer 1

Ответ:

${2x}^{2} - x - 3 = 0 \\ 2 {x}^{2} + 2x - 3x - 3 = 0 \\ 2x(x + 1) - 3(x + 1) = 0 \\ (x + 1)(2x - 3) = 0 \\ x + 1 = 0 \\ 2x - 3 = 0 \\ x_{1} = - 1 \\ x_{2} = \frac{3}{2}$