Burt Kaliski Jr. (@modulomathy)

3/5/12 1:05 PM

#math trivia for #March5: #65 = (x^2-xy+y^2)(x+y) for positive integers x, y. What are x and y? (Hint: simplify the product.)

Simplifying the product by multiplying the terms gives

65 = x^3+y^3

The solution is x = 4, y = 1, or vice versa.

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