then the value of :  

Find the radius of the circle x²+y²-4x+6y=12

if ,then find the value of  

If x = 2 then the value of x³ + 27x² + 243x + 631 is

If (3x – 2y) : (2x + 3y) = 5 : 6, then one of the values of is

If x = – 1, then the value of   is

Out of the given responses, one of the factors of (a² – b² )3 + (b² – c²) 3 + (c² – a²) 3 is

if  , then is