Question

find a basis for and the dimension of the solution space of Ax = 0
A = |1 2-9|
|2 8 -38|
|5 14 -65|

Answer 1

have you reduced the matrix A to RREF?

Answer 2

When the matrix in in RREF the number of non-zero rows is equal to the dimension of the solution space

Answer 3

thank you