a) The matrix B is a 3 x 3 matrix and det(B) = 3. Give the reduced row echelon form of B. b) Compute the determinant of |a a+2 a+4| b b+2 6+4 C c+2 c+4| c) Solve DX = 0 with 40000 -1 2 0 0 0 D = 260 6 10 102 5 0 7 4 -3 O 000L

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