Tool for Factorization of a polynomial. Factorizing consists in expressing a polynomial as a product, so it can be it's canonical form.

Polynomial Factorization - dCode

Tag(s) : Symbolic Computation, Functions

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Tool for Factorization of a polynomial. Factorizing consists in expressing a polynomial as a product, so it can be it's canonical form.

Factorizing a mathematical polynomial expression of degree \( n \) means to express it as a product of polynomial factors.

Among the polynomial factorization's methods, the simplest is to recognize a remarkable identity. Remarkables identities also apply with polynomials

Example: The 2nd order polynomial \( a^2+2ab+b^2 \) is factorized as \( (a+b)^2 \)

Example: \( x^2+2x-a^2+1 = (-a+x+1)(a+x+1) \)

Another method is to try values like 0, 1, -1, 2 or -2, which are common in polynomials and allow you to find roots quickly.

Example: \( x^2-4 \) has the root -2 and 2 and thus can be factorized \( (x-2) (x+2) \)

A remarkable identity is an equality demonstrated between two mathematical terms, which is common enough to be detectable and usable without further demonstration. The best known are those used in factoring polynomials of degree 2:

$$ (a+b)^2 = a^2 + 2ab + b^2 $$

$$ (a-b)^2 = a^2 - 2ab + b^2 $$

$$ (a+b)(a-b)=a^2 - b^2 $$

Irreducible polynomials are polynomials which cannot be decomposed into a product of two non-constant polynomials. 1st Degree polynomials are always irreducible.

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