If a + b = 8 and ab = 12, then the value of $a^3+b^3$ is :

224 96 288 512

224

If x + y  = n then, $x^3 + y^3$ = n3 - 3 × n × xy If a + b = 8 ab = 12, then the value of $a^3+b^3$ is = 83 - 3 × 8 × 12 $a^3+b^3$ = 512 - 288  $a^3+b^3$ = 224