Linked from
The 9 pages that link to Rational root theorem, each with the reason it gives.
Polynomial rootRelated: It narrows the candidates when searching for rational polynomial roots.
Polynomial equationRelated: It narrows the candidates when an exact factorization is sought.
Factor theoremRelated: It supplies candidates that the factor theorem can verify.
Synthetic divisionRelated: Its candidate roots can be tested efficiently by synthetic division.