Помогите решить [tex] \left \{ {x^{2} - y^{2} = 0 } \atop {4+xy=0}} \right. [/tex]. Created by NasyaGurta. algebra-ru

tex]...

July 2022 1 14 Report

Помогите решить
[tex] \left \{ {x^{2} - y^{2} = 0 } \atop {4+xy=0}} \right. [/tex]

n1982 Х=-4/у
(-4/у)²-у²=0
16/у²-у²=0
16-у∧4=0
(4-у²)(4+у²)=0
у²=4
у=2
у=-2
у²=-4- корней нет
у=2
х=-2

у=-2
х=2

1 votes Thanks 1