SOLUTION: find the value of a3+b3+c3-3abc, given that a=2, b=3 and c=-1

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Question 613661: find the value of a3+b3+c3-3abc, given that a=2, b=3 and c=-1
Answer by radh(108) About Me  (Show Source):
You can put this solution on YOUR website!
All we have to do is substitute what we know in. 2%283%29%2B3%283%29-1%283%29-3%282%29%283%29%28-1%29. That might look a little intimidating, but let's take it one step at a time:
6%2B3%283%29-1%283%29-3%282%29%283%29%28-1%29
6%2B9-1%283%29-3%282%29%283%29%28-1%29
6%2B9-3-3%282%29%283%29%28-1%29
6%2B9-3-6%283%29%28-1%29
6%2B9-3-18%28-1%29
6%2B9-3%2B18
15-3%2B18
15%2B15
30

Your final answer is 30. :)