SOLUTION: I am trying to figure out how to figure the sum of a cube...125r^3+1. I am coming up with (x^2+5r+25r^2)(1+5r) but I am not sure it is correct. Can anyone help me? Thanks

Question 245464: I am trying to figure out how to figure the sum of a cube...125r^3+1. I am coming up with (x^2+5r+25r^2)(1+5r) but I am not sure it is correct. Can anyone help me? Thanks
Answer by Earlsdon(6294) (Show Source): You can put this solution on YOUR website!
Factor:
As you have pointed out, this is the sum of two cubes:

The sum of two cubes is factored thus:
and here, , , so...

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