If `x=1, y=2 and z =3` then find the value of `x^3 - z^3 + y^3`

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

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

If x = 1, y = - 2 and z = 3. find the value of (i) x^(3) + y^(3) + z^3-3xyz (ii) 3xy^(4) - 15 x^(2) y + 4z

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

If x=3, y=2 and z=-1 , then the value of (x^3+y^3+1)/(y^3-z^3) is

If x = 2a- 1, y = (2a - 2) and z =3 - 4a, then the value of x ^(3) + y ^(3) + z ^(3) will be :