Question

Помогите решить систему уравнений х2-у=-у и х+у=1

Answer 1

$left { {{x^2-y=-y} atop {x+y=1}} right.$

$left { {{x^2=-y+y} atop {x+y=1}} right.$

$left { {{x^2=0} atop {x+y=1}} right.$

$left { {{x=0} atop {y=1}} right.$