Respostas

2013-11-12T20:46:38-02:00
(m^4)^2 - 1 = (m^4 - 1)(m^4 + 1) = ((m^2)^2 - 1)(m^4 + 1) = (m^2 - 1)(m^2 + 1)(m^4 + 1) = (m - 1)(m + 1)(m^2 + 1)(m^4 + 1)