Question

Пожалуйста помогите

{x+y=2
{xy+x^2=4

Answer 1

$left { {{x+y=2} atop {xy+x^2=4}} right. - textgreater left { {{x=2-y} atop {x(y+x)=4}} right. \ \ \ (2-y)(y+2-y)=4 \ y=0 \ x=2-0 \ x=2 \ \ \ (x,y)=(2,0)$

Answer 2

x = 2-y

(2-y)*y+(2-y)² = 4
2y-y²+4-4y+y² = 4
-2y = 0
y = 0

x = 2
y = 0