SOLUTION: 54x^3-16y^3

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Question 157009: 54x^3-16y^3
Answer by orca(409) About Me  (Show Source):
You can put this solution on YOUR website!
Use the following identity to factor it:
a%5E3-b%5E3=%28a-b%29%28a%5E2%2Bab%2Bb%5E2%29
54x%5E3-16y%5E3
=2%2827x%5E3-8y%5E3%29
=2%28%283x%29%5E3-%282y%29%5E3%29
=2%283x-2y%29%28%283x%29%5E2%2B%283x%29%282y%29%2B%282y%29%5E2%29
=2%283x-2y%29%289x%5E2%2B6xy%2B4y%5E2%29