what is f(x) = 2x2 28x – 5 written in vertex form? f(x) = 2(x 7)2 – 19 f(x) = 2(x 7)2 – 103 f(x) = 2(x 14)2 – 14 f(x) = 2(x 14)2
– 98
2 answers:
Answer:

Step-by-step explanation:

To find out vertex apply the formula x=-b/2a
The value of a=2 and b=28

Now plug in x=-7 in f(x) equation and find out f(-7)

Vertex is (-7,-103)
Now use vertex formula

a=2, h=-7, k=-103
Plug in all the values in the vertex form equation

Hello,
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Answer B
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2x²+28x-5=2(x²+2*7x+49)-5-2*48
=2(x+7)²-103
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