Answer :
hello :
x²+4x+1 = (x² +4x+4) -4 +1
x²+4x+1 = (x+2)² -3...vertex form
the x-coordinate of the vertex is : -2
x²+4x+1 = (x² +4x+4) -4 +1
x²+4x+1 = (x+2)² -3...vertex form
the x-coordinate of the vertex is : -2