x² − 2,4x − 18 = 0

Question

Дискриминант: \(D = (-2.4)^2 - 4 \cdot 1 \cdot (-18) = 77.76\).

Корни: \(x_{1,2} = \frac{2.4 \pm \sqrt{77.76}}{2}\).

Ответ: \(x_1 \approx 5.61\), \(x_2 \approx -3.21\).

Accepted Answer

Дискриминант: \(D = (-2.4)^2 - 4 \cdot 1 \cdot (-18) = 77.76\).

Корни: \(x_{1,2} = \frac{2.4 \pm \sqrt{77.76}}{2}\).

Ответ: \(x_1 \approx 5.61\), \(x_2 \approx -3.21\).