Q20Long answer
Given A = −4 2 −4 , B = 2 3 4 , find BA and use this to solve the 2 −1 5 0 1 2 system of equations y + 2z = 7, x – y = 3, 2x + 3y + 4z = 17.
Given A = −4 2 −4 , B = 2 3 4 , find BA and use this to solve the 2 −1 5 0 1 2 system of equations y + 2z = 7, x – y = 3, 2x + 3y + 4z = 17.