perplexus.info :: Just Math : Septic Factorization

Septic Factorization (Posted on 2015-06-07)

Factorize: (a+b)⁷ - a⁷ - b⁷

Note: For an extra challenge, solve this puzzle without the aid of a computer program or an online calculator.

See The Solution Submitted by K Sengupta

Rating: 4.0000 (1 votes)

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| Comment 3 of 5 |

(x+y)^7 - x^7 - y^7 = 7xy(x+y) (x^2+x y+y^2)^2

Posted by Benny on 2015-06-07 19:49:33

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