Editor
The equation $ax^{2}+bx+c$, can be written in standard parabolic form as
Difficulty: Easy
A: 
$x=\frac{-b\pm\sqrt{b^{2}-4ac}}{2a}$
B: 
$y=(x-h)^{2}+k$
C: 
$y-k=(x-h)^{2}$
D: 
$y=a(2-b)^{2}$
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