Question

решить систему уравнений ​

Answer 1

$\left \{ {{x+y=6} \atop {x\cdot y=8}} \right.$

По теореме Виета :

$\left[\begin{array}{ccc}\left \{ {{x_{1} =2} \atop {y_{1}=4 }} \right. \\\left \{ {{x_{2} =4} \atop {y_{2}=2 }} \right. \end{array}\right\\\\\\Otvet:\boxed{(2 \ ; \ 4) \ , \ (4 \ ; \ 2)}$