Question

скоротіть дріб!!!!!!!!​

Answer 1

$\frac{2 {x}^{2} + x - 6}{2x + 4} = \frac{2(x + 2)(x - 1.5)}{2(x + 2)} = x - 1.5 \\ 2 {x}^{2} + x - 6 = 0 \\ a = 2 \\ D = {b}^{2} - 4ac = {1}^{2} - 4 \times 2 \times ( - 6) = 49 \\ x_{1.2} = \frac{ - b \pm \sqrt{D} }{2a} = \frac{ - 1 \pm \sqrt{49} }{2 \times 2} \\ x_{1} = - 2 \: \: \: \: \: \: \: \: \: x_{2} = \frac{3}{2} = 1 \frac{1}{2} = 1.5$