Question: What is the reduced row echelon form of A......quick help please!

August 16 2014 lala 25
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let A be a matrix=

 

[  7        7      9    -17

   6        6      1    -2

 -12    -12    -27    1

   7       7      17   -15 ]

What is the reduced row echelon form of A?

What is the rank of A?

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