document.write( "Question 626978: The first two rows of the following matrix are already in triangular form. Finish the job by performing Gaussian elimination on row 3. What are the contents of row 3 after you have done so?\r
\n" ); document.write( "\n" ); document.write( "[1 6 -2 0]
\n" ); document.write( "[0 -3 1 5]
\n" ); document.write( "[2 0 3 9]\r
\n" ); document.write( "\n" ); document.write( "I really dont get this \n" ); document.write( "
Algebra.Com's Answer #394575 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
The first two rows of the following matrix are already in triangular form. Finish the job by performing Gaussian elimination on row 3. What are the contents of row 3 after you have done so?
\n" ); document.write( "[1 6 -2 0]
\n" ); document.write( "[0 -3 1 5]
\n" ); document.write( "[2 0 3 9]
\n" ); document.write( "-------
\n" ); document.write( "Subtract 2 times the 1st line from the 3rd line to get:
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\n" ); document.write( "[1 6 -2 0]
\n" ); document.write( "[0 -3 1 5]
\n" ); document.write( "[0-12 7 9]
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\n" ); document.write( "Ans: [0 -12 7 9]
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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