If z = 5 , then find the value of   `2 - 3 ( 4 - z )`

If x = 1, y = 2, z = 5 , then find the value of 3x – 2y + 4z.

If z= 5 , find the value of z^3 - 3(z-5 )

If x = 1, y = 2 and z = 5 , find the value of 3x – 2y + z .

If x = 1, y = 2 and z = 5, find the value of (i) 3x - 2y + 4z (ii) x^(2) + y^(2) + z^(2) (iii) 2x^(2) - 3y^(2) + z^(3) (iv) xy + yz - zx (v) 2x^(2) y - 5yz + xy^(2) (vi) x^(3) - y^(3) - z^(3)

If x = 1, y = 2 , z = 5 , find the value of x^3 - y^3 -z^3

If z=4+i sqrt(7), then find the value of z^(2)-4z^(2)-9z+91

If x=2,y=-3,z=-2 , then find the value of 4xy^(2)-3yz^(2)+4x^(2)z

If [[x-y-z] , [-y+z] , [z]] = [[0], [5] , [3]] then find the values of x, y and z

If z=(1)/(2)(i sqrt(3)-1), then find the value of (z-z^(2)+2z^(3))(2-z+z^(2))