निम्नलिखित समीकरण निकाय
x+2y+z=1
x+y+z=2
x+y+2z=4
को आव्यूह विधि से हल कीजिएः

x-y+z=1 2x+y-z=2 x-2y-z=4

2x+y-z=1 x-y+z=2 3x+y-2z=-1

2x+y+z=1x-y+2z=-1,3x+2y-z=4

8x + y + 2z = 4x + 2y + z = 1x + y + z = 2

x+y+z=4 2x-y+z=-1 2x+y-3z=-9

x+2y-2z=5,3x-y+z=8,x+y-z=4

Prove that Det [[x + y + 2z, x, y], [z, y + z + 2x, y], [z, x, z + x + 2y]] = 2 (x + y + z) ^ 3

What should be added to x y+y z+z x to get x y-y z-z x ? -2x y-2y z-2z x (b) -3x y-y z-z x -3x y-3y z-3z x (d) 2x y+2y z+2z x