Question

ПОМОГИТЕ ПЖПЖПЖПЖПЖПЖПЖПЖП

Answer 1

Ответ:

x1, y1= -1, -3

x2, y2= -3, -1

Объяснение:

x=-4-y

xy=3

(-4-y)y=3

y=-3

y=-1

x=-4-(-3)

x=-4-(-1)

x=-1

x=-3

x1, y1=-1, -3

x2, y2=-3, -1

Answer 2

Ответ: (-3;-1), (-1;-3).

Объяснение:

$\displaystyle\\\left \{ {{x+y=-4} \atop {xy=3}} \right.\ \ \ \ \ \ \left \{ {{y=-x-4} \atop {x*(-x-4)=3}} \right. \ \ \ \ \ \ \left \{ {{y=-x-4} \atop {-x^2-4x-3=0\ |*(-1)}} \right. \\\\\\\left \{ {{y=-x-4} \atop {x^2+4x+3=0}} \right.\ \ \ \ \ \ \left \{ {{y=-x-4} \atop {x^2+3x+x+3=0}} \right. \ \ \ \ \ \ \left \{ {{y=-x-4} \atop {x*(x+3)+(x+3)=0}} \right. \\\\\\\left \{ {{y=-x-4} \atop {(x+3)*(x+1)=0}} \right. \ \ \ \ \ \ \left \{ {{y_1=-1\ \ \ \ y_2=-3} \atop {x_1=-3\ \ \ \ x_2=-1}} \right. .$