What is the first step when rewriting y = 6x2 + 18x + 14 in the form y = a(x – h)2 + k?
16 must be factored from 18x + 14
x must be factored from 6x2 + 18x
6 must be factored from 6x2 + 14
6 must be factored from 6x2 + 18x

A quadratic equation has the general form of: 

y=ax² + bx + c

It can be converted to the vertex form in order to determine the vertex of the parabola. It has the standard form of:

y = a(x+h)² - k

where h and k represents the vertex, h represent the point in the x axis and k is the point in the y axis. From the choices given, the first step in rewriting the equation is that 6 must be factored from 6x2 + 18x. Which yields to:

y = 6(x^2 + 3x) + 14