x(1 + y) + 4 = - 4y
x² + y² = 5
----
x(1 + y) + 4 + 4y = 0
x(1 + y) + 4(1 + y) = 0
(x + 4)( 1 + y) = 0
x = -4
(-4)² + y² = 5
y² = - 9 решений действительных нет
y = -1
x² + (-1)² = 5
x² = 4
x = +- 2
0твет (2, -1) (-2, -1)
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Verified answer
x(1 + y) + 4 = - 4y
x² + y² = 5
----
x(1 + y) + 4 + 4y = 0
x(1 + y) + 4(1 + y) = 0
(x + 4)( 1 + y) = 0
x = -4
(-4)² + y² = 5
y² = - 9 решений действительных нет
y = -1
x² + (-1)² = 5
x² = 4
x = +- 2
0твет (2, -1) (-2, -1)