1. The problem statement, all variables and given/known data find a basis for the subspace R^5 that consists of all the vectors of the form [(b-c), (d-2b), (4d), (c-2d), (6d+2b)] 2. Relevant equations 3. The attempt at a solution the only solution I can think of is e1, e2, e3, e4, e5... I don't think it's that simple though... would appreciate any input on this question. Thanks!