if ,then find the value of  

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

If 27(x+y)³ – 8(x-y)³=(x+5y)(Ax²+By²+Cxy), then what is the value of (A+B-C)?

If   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 x = – 1, then the value of   is

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

if , then what is the value of