SOLUTION: Factor the following Polynomials 1.) 8y^3-1 2.) b^3+27 3.) 8m^3+343n^3

Algebra ->  Finance -> SOLUTION: Factor the following Polynomials 1.) 8y^3-1 2.) b^3+27 3.) 8m^3+343n^3       Log On


   

Question 1038336: Factor the following Polynomials
1.) 8y^3-1
2.) b^3+27
3.) 8m^3+343n^3
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Factor the following Polynomials
1.) 8y^3-1
It's a difference of 2 cubes.
a%5E3+-+b%5E3+=+%28a-b%29%2A%28a%5E2+%2B+ab+%2B+b%5E2%29
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2.) b^3+27
It's a sum of 2 cubes.
a%5E3+%2B+b%5E3+=+%28a%2Bb%29%2A%28a%5E2+-+ab+%2B+b%5E2%29
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3.) 8m^3+343n^3
Same as #2.
You have to know this.