Resposta :
x²+2x=3-y
x²+2x=-y+3
x²+2x+?=-y+3+?
x²+2x+1=-y+3+?
x²+2x+1=-y+3+1
(x+1)²=-y+4
(x+1)²=-(y-4)
Parábola com vértice (-1,4)
x²+2x=-y+3
x²+2x+?=-y+3+?
x²+2x+1=-y+3+?
x²+2x+1=-y+3+1
(x+1)²=-y+4
(x+1)²=-(y-4)
Parábola com vértice (-1,4)
