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Diophantine equation problem. How do I write it out?

(A^x + B^y)^3 = C^3

How do I write this out on the left side to show taking it to the 3rd power?

Update:

I need to know how to distribute (A^x + B^y)(A^x + B^y)(A^x + B^y)

1 Answer

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  • ?
    Lv 5
    8 years ago
    Favorite Answer

    (A^x + B^y)^2 = (A^x + B^y)(A^x + B^y) = A^(2x) + 2A^xB^y + B^(2y)

    so

    (A^x + B^y)^3 = (A^(2x) + 2A^xB^y + B^(2y))(A^x + B^y) = A^(3x) + 3A^(2x)B^y + 3A^xB^(2y) + B^(3y)

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