If a polynomial with integer coefficients,,...,, is reducible in, and the prime p divides the coefficients,,...,, but does not divide, and does not divide, then p does not divide, and the polynomial A(x) must have a rational root.
Kung ang isang polinomyal sa integer coefficients,,...,, ay maaaring bawasan sa, At ang kalakasan p divides ang coefficients,,...,, Ngunit hindi paghati-hatiin, At hindi paghati-hatiin, Pagkatapos p ay hindi paghati-hatiin, At ang polinomyal A (x) ay dapat magkaroon ng isang rational ugat.