If x:y:z = 3:4:6, and (5x + 3z) = 132, then find the value of '3y'.

If √f + (1/√f) = 5, then find the value of f + (1/f).

If x + y + z = 6, and x³ + y³ + z³ = 36, xyz = 6 then find (xy +yz + zx)?

If a + b + c = 8, a² + b² + c² = 18 and ab + b c+ ca = 12, then what is the value of a³ + b³ +c³ –3abc?

Let {x + (1/x)} = 4, then Determine the value of {x² + (1/x²)}

If 4x² + y² = 40 and x y = 6, then find the value

of 2x + y?

If   a ² + b ² + c ² = 40 & ab + bc + ca = 12 then  a + b+ c = ?