College Algebra
The solution of the system {(w, x, y, z)} → {(1, -1, 2, 2)}
The solution of the system {(w, x, y, z)} → {(-1, -1, 0, 2)}
The solution of the system {(w, x, y, z)} → {(1, -1, 0, -2)}
The solution of the system {(w, x, y, z)} → {(1, -1, 0, 2)}