Answer:
[tex]4(16l^2+36m^2+48lm-9m+6l)[/tex]
Step-by-step explanation:
[tex]16(2l+3m)^2-12(3m-2l)[/tex]
Factoring out 4
[tex]4(4(2l+3m)^2-3(3m-2l))[/tex]
[tex]4(4(4l^2+9m^2+12lm)-9m+6l)[/tex]
By using[tex](a+b)^2=a^2+b^2+2ab[/tex]
[tex]4(16l^2+36m^2+48lm-9m+6l)[/tex]
After factorization the given polynomial function becomes:
[tex]4(16l^2+36m^2+48lm-9m+6l)[/tex]