ПОМОГИТЕ СИСТЕМУ УРАВНЕНИЙ РЕШИТЬ [latex] \left \{ {{x-2y=2} \atop {xy=12}} \right. [/latex][latex] \left \{ {{5(x-y)=4y} \atop {x2+4y2=181}} \right. [/latex][latex] \left \{ {{x2+3y2-4x-5y-8=0} \atop {x-y+1=0}} \right. [/latex...

ПОМОГИТЕ СИСТЕМУ УРАВНЕНИЙ РЕШИТЬ  [latex] \left \{ {{x-2y=2} \atop {xy=12}} \right. [/latex] [latex] \left \{ {{5(x-y)=4y} \atop {x2+4y2=181}} \right. [/latex] [latex] \left \{ {{x2+3y2-4x-5y-8=0} \atop {x-y+1=0}} \right. [/latex] [latex] \left \{ {{x+2y=13} \atop {xy=15}} \right. [/latex]