1) P(x) = P( - x), entonces el polinomio P es par, es decir <img src="https://tex.z-dn.net/?f=P%28x%29%20%3D%20ax%5E4%2Bbx%5E2%2Bc" />
donde<img src="https://tex.z-dn.net/?f=a%2C%20b%5Ctext%20%7B%20y%20%7Dc" /> son número reales
2) P(1) = 0 <img src="https://tex.z-dn.net/?f=a%2Bb%2Bc%3D0" />
3) P( - x) / x = P(x) / x da resto 2 <img src="https://tex.z-dn.net/?f=%20%5Cdfrac%7BP%28x%29%7D%7Bx%7D%3Dax%5E3%2Bbx%2B%5Cdfrac%7Bc%7D%7Bx%7D" />
entonces<img src="https://tex.z-dn.net/?f=c%3D2" />
4) de (2) y (3) se deduce<img src="https://tex.z-dn.net/?f=b%20%3D%20-%28a%2B2%29" /> por ende el polinomio es <img src="https://tex.z-dn.net/?f=P%28x%29%3Dax%5E4-%28a%2B2%29x%5E2%2B2" />
donde<img src="https://tex.z-dn.net/?f=a%5Cneq%200" />.