H
__hjlary__


1/ Phan tjch thanh` nhan tu~:
x^12-3x^6+1
2/ cho a # 1. Rut' gon:
(a + 1)( a^2 +1)( a^4 +1)(a^8+1)( a^16 + 1)+1
x^12-3x^6+1
2/ cho a # 1. Rut' gon:
(a + 1)( a^2 +1)( a^4 +1)(a^8+1)( a^16 + 1)+1