Find Row Space ...
`[[-2,2,6,0],[0,6,7,5],[1,5,4,5]]`

Solution:

	`-2`	`2`	`6`	`0`
	`0`	`6`	`7`	`5`
	`1`	`5`	`4`	`5`

Now, reduce the matrix to reduced row echelon form
`R_1 larr R_1-:(-2)`

=	`1` `-1` `-3` `0` `0` `6` `7` `5` `1` `5` `4` `5`

`R_3 larr R_3- R_1`

=	`1` `-1` `-3` `0` `0` `6` `7` `5` `0` `6` `7` `5`

`R_2 larr R_2-:6`

=	`1` `-1` `-3` `0` `0` `1` `7/6` `5/6` `0` `6` `7` `5`

`R_1 larr R_1+ R_2`

=	`1` `0` `-11/6` `5/6` `0` `1` `7/6` `5/6` `0` `6` `7` `5`

`R_3 larr R_3-6xx R_2`

=	`1` `0` `-11/6` `5/6` `0` `1` `7/6` `5/6` `0` `0` `0` `0`

The rank of a matrix is the number of non all-zeros rows
`:. Rank = 2`

Row Space :
The nonzero rows in the reduced row-echelon form are a basis for the row space of the matrix
`[[1,0,-11/6,5/6]],`

`[[0,1,7/6,5/6]]`

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