multiply. give your answer in the standard form

(2n^2 + 5n + 4)(2n - 4)

Expanding using the distributive property, we get:

4n^3 - 8n^2 + 10n^2 - 20n + 8n - 16

Simplifying and combining like terms, we get:

4n^3 + 2n^2 - 12n - 16

In standard form, this is:

4n^3 + 2n^2 - 12n - 16