we are given wit a polynomial to factorize
[tex] - m^2 n^5 - 4 m^3 n^6 [/tex]
[tex] - m^2 n^5 - 4 m^3 n^6=- m^2 n^5 - 4 m^2*m^1 n^5*n^1\\\\- m^2 n^5 - 4 m^3 n^6=- m^2 n^5 - 4 m^2\ n^5*mn\\\\- m^2 n^5 - 4 m^3 n^6=-m^2 n^5(1+4mn)\\ [/tex]
Hence the complete factor of the polynomial is [tex] -m^2 n^5(1+4mn) [/tex]
