x = 18
y = -12
x - y = 30
x² - y² = 180
x = 30 + y
(30 + y)² - y² = 180
900 + 60y + y² - y² = 180
900 + 60y = 180
60y = -720
x = 18
y = -12
Объяснение:x - y = 30
x² - y² = 180
x = 30 + y
x² - y² = 180
x = 30 + y
(30 + y)² - y² = 180
x = 30 + y
900 + 60y + y² - y² = 180
x = 30 + y
900 + 60y = 180
x = 30 + y
60y = -720
x = 30 + y
y = -12
x = 18
y = -12