Объяснение:

[tex]36 {m}^{4} - 36 {m}^{2} - 12 {m}^{3} + 12 m = 36 {m}^{2} ( {m}^{2} - 1) - 12m( {m}^{2} - 1) = ( {m}^{2} - 1)(36 {m}^{2} - 12m) = 12m( m - 1)(m + 1)(3m - 1)[/tex]