SOLUTION: x^3-8/27

Algebra ->  Equations -> SOLUTION: x^3-8/27      Log On


   

Question 555487: x^3-8/27
Answer by Earlsdon(6294) About Me  (Show Source):
You can put this solution on YOUR website!
You really should give us a hint of what you would like to do with this expression!
Did you want to factor it?
x%5E3-8%2F27 This is a difference of cubes.
%28x%29%5E3-%282%2F3%29%5E3 which will factor nicely thus:
A%5E3-B%5E3+=+%28A-B%29%28A%5E2%2BAB%2BB%5E2%29 and in this case, A+=+x and B+=+2%2F3 so we have:
x%5E3-8%2F27+=+%28x-2%2F3%29%28x%5E2%2B%282%2F3%29x%2B4%2F9%29