Write the systems of equations in the matrix form AX = B. 19. 2xy + 4z...

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Write the systems of equations in the matrix form AX = B. 19. 2xy + 4z = 1 x+y-z=4 y + 3z = 5 x + y = 2 0. x3x + x3 - 5x4 = 2 x + x-x3 + x4 = 1 X1 X2 X3 + 6x4 = 6 Write the systems of equations in the matrix form AX = B. 19. 2xy + 4z = 1 x+y-z=4 y + 3z = 5 x + y = 2 0. x3x + x3 - 5x4 = 2 x + x-x3 + x4 = 1 X1 X2 X3 + 6x4 = 6