Find the best answers to your questions with the help of IDNLearn.com's expert contributors. Discover detailed and accurate answers to your questions from our knowledgeable and dedicated community members.

Sheila is dividing [tex]$x^4 - 4x^3 + 4x^2 - 6x + 5$[/tex] by [tex]$x - 1$[/tex] using a division table.

\begin{tabular}{|l|c|c|c|c|c|}
\hline
& & \multicolumn{4}{|c|}{Quotient} \\
\hline
\multirow{4}{*}{Divisor} & & [tex]$x^3$[/tex] & [tex]$-3x^2$[/tex] & [tex]$+x$[/tex] & [tex]$-5$[/tex] \\
\cline{2-6}
& [tex]$x$[/tex] & [tex]$x^4$[/tex] & [tex]$-4x^3$[/tex] & [tex]$4x^2$[/tex] & [tex]$A$[/tex] \\
\cline{2-6}
& [tex]$-1$[/tex] & [tex]$-x^3$[/tex] & [tex]$4x^2$[/tex] & [tex]$B$[/tex] & [tex]$C$[/tex] \\
\hline
\end{tabular}

What are the missing values in the table?

A. [tex]$A = -5x ; B = 1x ; C = 5$[/tex]
B. [tex]$A = -5x ; B = -1x ; C = 5$[/tex]
C. [tex]$A = 5x ; B = -1x ; C = 5$[/tex]
D. [tex]$A = 5x ; B = 1x ; C = 5$[/tex]


Sagot :

To determine the missing values in the table from Shelia's polynomial division, let's examine how the division process unfolds.

1. Looking at the quotient's coefficients:
- The quotient given in the table is [tex]\( x^3 - 3x^2 + x - 5 \)[/tex].

2. Focusing on the division table:
- The first row under "Divisor" shows the division process with the term [tex]\( x \)[/tex] and its multiplication into all terms of the quotient.
- Similarly, the second row shows the result of multiplying the divisor by [tex]\(-1\)[/tex] through all the quotient terms.

Given the table format and the results found earlier ([tex]\((-5, 3, 5)\)[/tex]):

3. Identifying value calculations:
- The missing values in the table correspond to coefficients gathered from the polynomial division carried out.

### Step-by-step determination of coefficients:

[tex]\(\mathbf{A}\)[/tex] Calculation:
- From the first row, [tex]\(x-1 = \divisor\)[/tex], we multiply [tex]\(-5\)[/tex] (constant term in the quotient) and [tex]\(x\)[/tex] from the divisor:
- [tex]\(-5 \cdot x = -5x\)[/tex].
So, [tex]\(A = -5\)[/tex].

[tex]\(\mathbf{B}\)[/tex] Calculation:
- In the second row, the term from the table under [tex]\(B\)[/tex], multiplying the second term (-[tex]\((\divisor\)[/tex] term)) from the quotient coefficient ([tex]\(-3x^2\)[/tex]) by [tex]\(-1\)[/tex]):
- [tex]\((-1 \cdot -3x^2) = 3x^2\)[/tex].
So, [tex]\(B = 3x\)[/tex].

[tex]\(\mathbf{C}\)[/tex] Calculation:
- From the constant multiplication with [tex]\(-1\)[/tex] and quotient's last term ([tex]\(-5\)[/tex]):
- [tex]\((-1) \cdot (-5) = 5\)[/tex].
So, [tex]\(C = 5\)[/tex].

### Values:
- [tex]\(A = -5\)[/tex]
- [tex]\(B = 3\)[/tex]
- [tex]\(C = 5\)[/tex]

Thus, we can see which answer given matches these values. The correct choice is:

[tex]\(\boxed{-5, 3, 5}\)[/tex].