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Determine the function's value when [tex]\( x = -1 \)[/tex].

[tex]\( g(x) = x^3 + 6x^2 + 12x + 8 \)[/tex]

A. [tex]\( g(-1) = -3 \)[/tex]
B. [tex]\( g(-1) = 0 \)[/tex]
C. [tex]\( g(-1) = 1 \)[/tex]
D. [tex]\( g(-1) = 27 \)[/tex]


Sagot :

To determine the value of the function [tex]\( g(x) \)[/tex] when [tex]\( x = -1 \)[/tex]:

1. Start by substituting [tex]\( x = -1 \)[/tex] into the function [tex]\( g(x) \)[/tex]:
[tex]\[ g(x) = x^3 + 6x^2 + 12x + 8 \][/tex]

2. Now substitute [tex]\( x = -1 \)[/tex] into the function:
[tex]\[ g(-1) = (-1)^3 + 6(-1)^2 + 12(-1) + 8 \][/tex]

3. Next, calculate each term individually:
[tex]\[ (-1)^3 = -1 \][/tex]
[tex]\[ 6(-1)^2 = 6 \times 1 = 6 \][/tex]
[tex]\[ 12(-1) = -12 \][/tex]
[tex]\[ 8 \text{ (constant term)} \][/tex]

4. Add these results together:
[tex]\[ g(-1) = -1 + 6 - 12 + 8 \][/tex]

5. Perform the arithmetic step-by-step:
[tex]\[ \begin{align*} -1 + 6 & = 5 \\ 5 - 12 & = -7 \\ -7 + 8 & = 1 \end{align*} \][/tex]

Therefore, the value of the function [tex]\( g(x) \)[/tex] when [tex]\( x = -1 \)[/tex] is [tex]\( g(-1) = 1 \)[/tex].

The correct answer is:
[tex]\[ g(-1) = 1 \][/tex]