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Use Elementary Row Operations to Write the Matrix Below in Row

Question 91

Multiple Choice

Use elementary row operations to write the matrix below in row echelon form. [12193232720426]\left[ \begin{array} { c c c c } 1 & 2 & 1 & - 9 \\3 & 2 & 3 & - 27 \\2 & 0 & 4 & - 26\end{array} \right]


A) [145001410011]\left[ \begin{array} { c c c c } 1 & - 4 & - 5 & 0 \\0 & 1 & 4 & - 1 \\0 & 0 & 1 & 1\end{array} \right]
B) [121901140014]\left[ \begin{array} { c c c c } 1 & 2 & 1 & - 9 \\0 & 1 & - 1 & 4 \\0 & 0 & 1 & - 4\end{array} \right]
C) [140501410011]\left[ \begin{array} { c c c c } 1 & - 4 & 0 & - 5 \\0 & 1 & 4 & - 1 \\0 & 0 & 1 & 1\end{array} \right]
D) [145001140011]\left[ \begin{array} { c c c c } 1 & - 4 & - 5 & 0 \\0 & 1 & - 1 & 4 \\0 & 0 & 1 & 1\end{array} \right]
E) [121901410014]\left[ \begin{array} { l l l l } 1 & 2 & 1 & - 9 \\0 & 1 & 4 & - 1 \\0 & 0 & 1 & - 4\end{array} \right]

Correct Answer:

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