SOLUTION: factor 125x^3+y^3

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Question 1130529: factor 125x^3+y^3
Found 2 solutions by MathLover1, josgarithmetic:
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

factor
125x%5E3%2By%5E3+
=%285x%29%5E3%2By%5E3+
use Factoring a Sum of Cubes:
a%5E3+%2B+b%5E3+=+%28a+%2B+b%29%28a%5E2+-ab+%2B+b%5E2%29
=%285x%2By%29%28%285x%29%5E2-5x%2Ay%2By%5E2%29+
=%285x%2By%29%2825x%5E2-5xy%2By%5E2%29+

Answer by josgarithmetic(39621) About Me  (Show Source):
You can put this solution on YOUR website!
A formula can be found for a polynomial of that form.
a%5E3%2Bb%5E3=%28a%2Bb%29%28a%5E2-ab%2Bb%5E2%29

Your example uses a=5x and b=y.