Question

(2х2 - х = y,
Решите систему уравнений
2x – 1 = у.​

Answer 1

Ответ:

$2x {}^{2} - x = y \\ 2x - 1 = y \\ 2x {}^{2} - x = 2x - 1 \\ 2x {}^{2} - x - 2x + 1 = 0 \\ x1 = \frac{1}{2} \\ x2 = 1 \\ y1 = 2 \times \frac{1}{2} - 1 \\ y2 = 2 \times 1 - 1 \\ y1 = 0 \\ y2 = 1$