3 years ago

What is the first step in writing f(x) = 3x2 + 6x – 8 in vertex form?

Mathematics

2 answers:

IRINA_888 [86]3 years ago

5 0

Factor out 3 from the first two terms (D)

madreJ [45]3 years ago

3 0

F(x)=3x^2+6x-8
Formula: a=-b/2(a)
a=-6/2(3)=-3
I guess the answer is d)

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Step-by-step explanation:

The function will be zero when the numerator is equal to 0. So, set the numerator equal to 0 and solve:

$0 = 4 {x}^{2} - 36x$

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$\frac{ 36 + \sqrt{ {36}^{2} - 4(4)(0)} }{2(4)} \\ \frac{ 36 + 36}{8} = 9$

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