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Simplify the expression (Posted on 2006-06-16) Difficulty: 2 of 5
Simplify the expression

x26 - x25(a+b+c+...+z) + x24(ab+ac+...+az+bc+...+bz+...+yz) - x23(abc+...+abz+acd+...+acz+...+xyz) + ... + abc...z

See The Solution Submitted by Salil    
Rating: 2.6667 (3 votes)

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Puzzle Solution ( Clarification) | Comment 7 of 8 |
(In reply to No Subject by shawn)

The expression A given by:
A = (x - a)(x - b).......................(x - z)
contains (x-x) as one of its factors.  Since, x-x=0. it follows that:
A = 0.

Edited on June 29, 2006, 5:03 am
  Posted by K Sengupta on 2006-06-29 05:03:05

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