Add:
`5x - 8y + 2z, 3z - 4y - 2x, 6y - z - x and 3x - 2z - 3y `

Add 2x - 3y + z , 5y - x + 7z and 3x - y - 6z.

Add : 8x - 3y + 7z, -4x + 5y - 4z, -x - y - 2z

3x - [4y - {7x - (3z - 2y) + 4z - 3(x + 3y - 2z)}]

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

Find the angle between the planes : (i) 3 x - 6y - 2z = 7 " " 2x + y - 2z = 5 (ii) 4 x + 8y + z = 8 " " and y + z = 4 (iii) 2 x - y + z =6 " " and x + y + 2z = 7 .

2x-3y+5z=16, 3x+ 2y-4z= -4, x + y - 2z =- 3.

solve x + 2y + 3z = 8 2x + y + z = 8 x + y + 2z = 6 .

Subtract the sum of 5x - 4y + 6z and -8x + y - 2z from the sum of 12x - y + 3z and -3x + 5y - 8z