Evaluating the Product of Polynomials: (x-a)(x-b)(x-c)...

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    Polynomials Product
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Discussion Overview

The discussion revolves around evaluating the product of polynomials, specifically the expression (x-a)(x-b)(x-c) and its expansion. Participants explore algebraic manipulations and interpretations of the expression, with a focus on the resulting polynomial form.

Discussion Character

  • Technical explanation, Mathematical reasoning, Debate/contested

Main Points Raised

  • One participant presents the product as (x^2 - bx - ax + ab)(x-c) and expands it, leading to a polynomial expression.
  • Another participant critiques the initial expansion, suggesting it lacks elegance and clarity, and provides a corrected final form of the polynomial.
  • A different participant humorously notes that the product equals zero if one of the factors is (x-x), indicating a special case.
  • There is a suggestion that the original post could have been clearer in its presentation of the polynomial product.

Areas of Agreement / Disagreement

Participants express differing views on the clarity and elegance of the polynomial expansion, with some finding it straightforward while others critique its presentation. No consensus is reached on the best approach to the problem.

Contextual Notes

Some participants mention the need for clearer notation and careful reading, indicating potential misunderstandings in the initial formulation of the problem.

vikasj007
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well i could not get anything really mibd boggling, so u will have to put up with this one

what is the product of:

(x-a)(x-b)(x-c)..... = ?
 
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[tex](x^2 - bx - ax + ab)(x-c)[/tex]

[tex]= x^3 - cx^2 - bx^2 + cbx - ax^2 +cax + abx - cab[/tex]

What the hell was the point? Basic algebra, without even a nice expansion.

EDIT *sigh*, yeah ok, had to collect terms, it looked so bad otherwise:

[tex]= x^3 - (a+b+c)x^2 + (ab + ac + bc)x - abc[/tex]
 
Last edited:
Haha, haven't seen that one in a long time :smile:

(x - a)(x - b) ... (x - x)(x - y)(x - z) = 0

since x - x = 0
 
what in the world was cepheid trying to do?

next time try to read carefully.
 
vilkasj007, u should have written it more clearly. something like this:
(x-a)(x-b)...(x-y)(x-z) = ?
 

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