Question

Буду рада помощи. нужно решить систему дам 30 баллов​

Answer 1

$\left \{ {{x+y=-6} \atop {xy = -16}} \right. <=> \left \{ {{y=-6-x} \atop {x(-6-x)=-16}} \right. <=> \left \{ {{y=-6-x} \atop {-6x - x^2 = -16}} \right. <=> \left \{ {{y=-6-x} \atop {-x^2-6x+16=0}} \right. <=> \left \{ {{y=-6-x} \atop {(x+8)(x-2) = 0}} \right. <=> \left \{ {{y=2} \atop {x=-8}} \right. OR \left \{ {{y=-8} \atop {x=2}} \right.$