I am trying to solve this system of equations

(y-1)^2=4+x

x+y=-1

This is what I did

y^2-1y-1y-1y+1=4+x

y^2-2y+1=4+x

y^2-2y-3=x

Then I used the quadratic formula to get x=-3

Then plugged that in to x+y=1

I got y=2

Now I am confused because according to my book there are two solutions for this program I found (-3,2)

But I am having trouble finding the other solution?