polinomis de grau 2k lineal

x^{4}+bx+c=0


x_{1} = ( e^{(1/4)·pi·i} [+] e^{(-1)·(3/4)·pi·i} )·(1/(-2)^{(1/4)})·c^{(1/4)}
x_{2} = ( e^{(-1)(1/4)·pi·i} [+] e^{(3/4)·pi·i} )·(1/(-2)^{(1/4)})·c^{(1/4)}


x^{2k}+bx+c=0


x_{1} = ( e^{(1/2k)·pi·i} [+] e^{(-1)·((2k+(-1))/2k)·pi·i} )·(1/(-2)^{(1/2k)})·c^{(1/2k)}
x_{2} = ( e^{(-1)(1/2k)·pi·i} [+] e^{((2k+(-1))/2k)·pi·i} )·(1/(-2)^{(1/2k)})·c^{(1/2k)}