Question

What is the first step in solving x^2+2x+3=0

Answer 1

First subtract three from both sides. then you have $x^{2}$ +2x=-3 and you solve from there

Answer 2

Is the question asking by completing the square? 
X^2+2X+3=0
X^2+2x+1+2=0
(x+1)^2+2=0
(x+1)^2=-2
x+1=squr root 2i or x+1=-sqr root 2i