Предмет: Математика, автор: andrei666

ху+у^2=3 у^2-xy=5 решить систему

Ответы

Автор ответа: miron2077

ху+у²=3
-ху+у²=5
сложим
2у²=8
у²=4
у₁=2 у₂=-2
х₁=(3-у₁²):у=(3-4):2=-0,5
х₂=(3-у₂²):у=(3-4):(-2)=0,5

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