{х+у=3,
{х2+у2=29
y = 3-x
x²+(3-x)² = 29
x² + 9 - 6x + x² = 29
2x² - 6x - 20 = 0
x² - 3x - 10 = 0
(x+2)(x-5) = 0
x¹ = -2, x² = 5
{х+у=3,
{х2+у2=29
y = 3-x
x²+(3-x)² = 29
x² + 9 - 6x + x² = 29
2x² - 6x - 20 = 0
x² - 3x - 10 = 0
(x+2)(x-5) = 0
x¹ = -2, x² = 5