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nellymbh4227
07.10.2019 •
Mathematics
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
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Ответ:
Option D, 6 must be factored from![6x^2+18x](/tpl/images/0297/8706/82c61.png)
Step-by-step explanation:
Given :![y=6x^2+18x+14](/tpl/images/0297/8706/98267.png)
To find : The given equation in the form
Solution :
Now, we re-write the given equation
To covert it into vertex form
where (h,k) represents the vertex.
First step is to take 6 common from![6x^2+18x](/tpl/images/0297/8706/82c61.png)
i.e,
Now, further step is by completing the square,
The required form is![y=6(x+\frac{3}{2})^2+\frac{1}{2}](/tpl/images/0297/8706/61dda.png)
Where, a=6,![(h,k)=(-\frac{3}{2},\frac{1}{2})](/tpl/images/0297/8706/5ee2c.png)
Therefore, Option D is correct, 6 must be factored from![6x^2+18x](/tpl/images/0297/8706/82c61.png)
Ответ: