Не смогли бы помочь?? . Created by Dauren99. matematika-ru

Не смогли бы помочь?? ...

July 2022 1 14 Report

Не смогли бы помочь??

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GREENDEY 1 + 1 = 7 ОДЗ: х≠0 и y≠0
x y xy
1 - 1 = 3
x y xy
Сложим 1 и 2 уравнения:

2 = 10 | * xy
x    xy

2xy = 10xy
x    xy
2y = 10
y = 5

1 + 1 = 7
x 5 5x
1   = 7 - 1
x    5x 5
1   = 7 - х
x       5x
5x = х(7 - х)
5x = 7х - х²
х² - 2х = 0
х(х - 2) = 0
х =0 или   х = 2
(не удовлетворяет
ОДЗ )

Ответ: (2 ; 5)

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