Question

Помогите, это алгебра ​

Answer 1

вот, все написано))))

Answer 2

Ответ:

$\left \{ {{3x - 2y = 4} \atop {x^{2} - xy = 2}} \right. \\y = \frac{3x - 4}{2} \\x^{2} - x\frac{3x - 4}{2} = 2\\x^{2} - \frac{3x^{2} - 4x}{2} = 2\\x^{2} - 1.5x^{2} - 2x = 2\\- 0.5x^{2} - 2x = 2\\0.5x^{2} + 2x = -2\\0.5x^{2} + 2x + 2 = 0\\x^{2} + 4x + 4 = 0\\D = 16 - 4*4 = 0\\x = \frac{-4}{2} = -2\\y = \frac{3x - 4}{2} = \frac{3(-2) - 4}{2} = \frac{-10}{2} = -5 \\x = -2, y = -5$