Perform the Indicated Row Operations, Then Write the New Matrix

question 62

Multiple Choice

Perform the indicated row operations, then write the new matrix.
- $$\left[ \begin{array} { r r r | r } 1 & 1 & 1 & - 1 \\- 2 & 3 & 5 & 3 \\3 & 2 & 4 & 1\end{array} \right] \begin{array} { c } 2 R 1 + R 2 \rightarrow R 2 , \\- 3 R 1 + R 3 \rightarrow R 3\end{array}$$

• A)
• \[\left[ \begin{array} { r r r | r }
• 1 & 1 & 1 & - 1 \\
• 0 & 5 & 7 & 1 \\
• 0 & - 1 & 1 & 4
• \end{array} \right]\]
• B)
• \[\left[ \begin{array} { r r r | r }
• 1 & 1 & 1 & - 1 \\
• 0 & 5 & 7 & 3 \\
• 0 & - 1 & 1 & 1
• \end{array} \right]\]
• C)\[\left[ \begin{array} { r r r | r }
• 1 & 1 & 1 & - 1 \\
• - 2 & 3 & 5 & 3 \\
• 0 & - 1 & 1 & 1
• \end{array} \right]\]
• D)
• \(\left[ \begin{array} { l l l | r } 1 & 1 & 1 & - 1 \\ 0 & 5 & 7 & 1 \\ 3 & 2 & 4 & 1 \end{array} \right]\)

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