Answer:
[tex]( - 2b + 4)(6 {b}^{2} - 4b + 2) \\ \\ = - 12 {b}^{3} + 8 {b}^{2} - 4b + 24 {b}^{2} - 16b + 8 \\ \\ = - 12 {b}^{3} + 32 {b}^{2} - 20b + 8[/tex]
I hope I helped you^_^
-12b^3 + 8b^2 - 4b + 24b^2 - 16b + 8
Hope this helps! Sorry I couldn't explain though :(
