[" 9.2"y/x+y+z=9" and "xy+yz+zx=23],[" Then find the ualue "3fx^(2)+y^(2)+z^(2)" ."]

If ( x +y+z ) = 9 and ( xy + yz + zx ) = 26 then find the value of x^(2) + y^(2) z^(2)

If x+y+z=6, xy+yz+zx=11. Find the value fo x^(2)+y^(2)+z^(2) .

If x + y + z = 10, x ^(3) + y ^(3) + z ^(3) = 75 and xyz = 15, then find the value of x ^(2) + y ^(2) + z ^(2) - xy - yz - zx

If x = 6, y = 4 and z = 3, then find the value of x ^(2) + y ^(2) + z ^(2) - 2xy + 2 yz - 2 zx.

If x^2+y^2+z^2= xy+yz+zx then find the value of (x+y):z.

If x+y+z=9 and xy+yz+zx=23 , the value of (x^3+y^3+z^3-3xyz)=?