Fill in the Blank Using Elementary Row Operations to Form $\left[ \begin{array} { r r r } 2 & 1 & - 2 \\- 10 & - 1 & 9\end{array} \right]$

question 142

Multiple Choice

Fill in the blank using elementary row operations to form a row-equivalent matrix. $\left[ \begin{array} { r r r } 2 & 1 & - 2 \\- 10 & - 1 & 9\end{array} \right]$ $\left[ \begin{array} { l l l } 2 & 1 & - 2 \\0 & \square & - 1\end{array} \right]$

• A) \(\left[ \begin{array} { c c c }
• 2 & 1 & - 2 \\
• 0 & - 6 & - 1
• \end{array} \right]\)
• B) \(\left[ \begin{array} { l l l }
• 2 & 1 & - 2 \\
• 0 & 4 & - 1
• \end{array} \right]\)
• C) \(\left[ \begin{array} { r r r }
• 2 & 1 & - 2 \\
• 0 & - 4 & - 1
• \end{array} \right]\)
• D) \(\left[ \begin{array} { l l l }
• 2 & 1 & - 2 \\
• 0 & 1 & - 1
• \end{array} \right]\)
• E) \(\left[ \begin{array} { l l l }
• 2 & 1 & - 2 \\
• 0 & 0 & - 1
• \end{array} \right]\)

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