From the given options, select the alphanumeric group

If (3x - y) = 3, xy = (2/3), then find the value of {x³ - (y³/27)}

If x ²  – 15x + 51 = 0, then determine the value of (x – 5) + {1/(x – 5)}.

If a + b + c + d = 4,  then the value of  

If a = 32, b = c = 31, then find the value of a ³  + b ³  + c ³  – 3abc.

4, 10, 19, 30, 43, ?

If ab + bc + ca = 0

Find the value of 1/(a² - bc) + 1/(b² - ca) + 1/(c² - ab)

If x² + y² + z² = xy + yz + zy (x≠0), then the value of (5x+3y-4z)/2x is

If (a + b + c) = 18 and (ab + bc + ca) = 100, then find the value of (a² + b² + c²).