If a + b = 3,  then the value of a³ + b³ + 9ab is

• 27

• 9

• 16

• 16

If 6x² - 12x + 1 = 0, then the value of  is

• 162

• 189

• 207

• 207

If  , then the value of  is

• 9

• -9

• 1

• 1

If  then the value of a³ + b³ - 2 is

• 0

• -2

• -1

• -1

If , then the value of  is

• 
• 

• 0

• 0

If x + y = 1 + xy, then x³ + y³ - x³y³ is equal to

• 0

• 1

• -1

• -1

If   then the value of  is

If  then the value of  is equal to

• 0

• 
• 
• 

If  then 3x³ + 9x is equal to

• 5

• 6

• 7

• 7

140.

If x = 222,  y = 223,   z = 225, then the value of x³ + y³ + z³ - 3xyz

• 4590

• 4690

• 4950

• 4950