Question

Пожалуйста!!!!!!!!!!!!!​

Answer 1

Ответ:

Пошаговое объяснение:

$\left \{ {{x^2 - y^2=6} \atop {x+y=6}} \right.$

$\left \{ {{x^2 - y^2=6} \atop {x=6-y}} \right.$

$\left \{ {{(6-y)^2 - y^2=6} \atop {x=6-y}} \right.$

$\left \{ {{36-12y + y^2- y^2=6} \atop {x=6-y}} \right.$

$\left \{ {{-12y=-30} \atop {x=6-y}} \right.$

$\left \{ {{y=2.5} \atop {x=6-y}} \right.$

$\left \{ {{y=2.5} \atop {x=6-2.5}} \right.$

$\left \{ {{y=2.5} \atop {x=3.5}} \right.$