Помогите пожалуйста!!!

1)
$\left \{ {{x^2-y=-2} \atop {2x+y=2}} \right. \ \textless \ =\ \textgreater \ \left \{ {{y=x^2+2} \atop {2x+x^2+2=2}} \right. \\x^2+2x+2=2;\\x^2+2x=2-2;\\x*(x+2)=0;$
x₁+2=0 или x₂=0;
x₁=-2
$\left \{ {{y_1=6} \atop {x_1=-2}} \right. \ \textless \ =\ \textgreater \ \left \{ {{y_2=2} \atop {x_2=0}} \right.$

2)
$\left \{ {{x-y=7} \atop {x*y=-10}} \right. \ \textless \ =\ \textgreater \ \left \{ {{x=7+y} \atop {y*(7+y)=-10}} \right.\\y*(7+y)=-10;\\y^2+7y+10=0;\\D=49-4*10=9=3^2;$
$y_1= \frac{-7-3}{2}=-5$ или $y_2= \frac{-7+3}{2}=-2$
$\left \{ {{x_1=2} \atop {y_1=-5}} \right. \ \textless \ =\ \textgreater \ \left \{ {{x_2=5} \atop {y_2=-2}} \right.$