а) 98x^6 - 2z^2 = 2(49x^6 - z^2) = 2(7x^3 + z)(7x^3 - z)
б) -5a^2 - 30ab - 45b^2 = -5(a^2 + 6ab + 9b^2) = -5(a + 3b)^2
в) m^6 + 27n^3 = (m^2)^3 + (3n)^3 = (m^2 + 3n)(m^4 - 3m^2n + 9n^2)
а) 98x^6 - 2z^2 = 2(49x^6 - z^2) = 2(7x^3 + z)(7x^3 - z)
б) -5a^2 - 30ab - 45b^2 = -5(a^2 + 6ab + 9b^2) = -5(a + 3b)^2
в) m^6 + 27n^3 = (m^2)^3 + (3n)^3 = (m^2 + 3n)(m^4 - 3m^2n + 9n^2)