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 41

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) \[\left[ \begin{array} { l l l }
• 2 & 1 & - 2 \\
• 0 & 0 & - 1
• \end{array} \right]\] ​