How do you write the matrix #[(1, -1, -1, 1), (5, -4, 1, 8), (-6, 8, 18, 0)]# using the row echelon form?
The matrix is
Perform the row operations on the matrix
The pivot is in the first column of the first row
Eliminate the first column
Find the pivot in the second column and in in the second row
Eliminate the second column