SOLUTION: factor 125x ^3 -1

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Question 1076263: factor 125x ^3 -1
Answer by Edwin McCravy(20060) About Me  (Show Source):
You can put this solution on YOUR website!

125x%5E3-1

Write 125 as 53.

5%5E3x%5E3-1

Then write 53x3 as (5x)3 

%285x%29%5E3-1

Write 1 as 13

%285x%29%5E3-1%5E3

Now substitute in the factoring formula for the difference 
of cubes:



with A = (5x) and B=1



So:



Edwin