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Espe
@Espe
July 2022
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petya999
X - y = -5
x^2 - 2xy - y^2 = 17
x = -5 - y
(x-y)^2 = 17
x = -5 - y
(-5 - 2y)^2 = 17
x = -5 - y
25 - 4y^2 = 17
x = -5 - y
-4y^2 = 17 - 25
x = -5 - y
-4y^2 = -8
x = -5 - y
y^2 = 2
x = -5 - y
y1 = 2
y2 = -2
x1 = -7
y1 = 2
x2 = -3
y2 = -2
Ответ: (-7;2) (-3;-2)
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Answers & Comments
x^2 - 2xy - y^2 = 17
x = -5 - y
(x-y)^2 = 17
x = -5 - y
(-5 - 2y)^2 = 17
x = -5 - y
25 - 4y^2 = 17
x = -5 - y
-4y^2 = 17 - 25
x = -5 - y
-4y^2 = -8
x = -5 - y
y^2 = 2
x = -5 - y
y1 = 2
y2 = -2
x1 = -7
y1 = 2
x2 = -3
y2 = -2
Ответ: (-7;2) (-3;-2)