E
Editor
Sep 18, 2022
The standard parabolic form of the equation $f(x)=x^{2}+4x+1$ is
Difficulty: Easy
A:
x(x+4)+1
B:
$(x+2)^{2}-3$
C:
$(x+4)^{2}+9$
D:
$x(x-2)^{2}+1$
ID: 63273dbaca83163ac3a12615