Answer:
A
Step-by-step explanation:
(3n²+2n+4)(2n-1)
to solve this multiply through by using each term in one bracket to multiply all terms in the second bracket to open the bracket.
3n²(2n-1) + 2n(2n-1) +4(2n-1)
6n³-3n² +4n²-2n+8n-4
6n³+n²+6n-4
Hence the correct option is A
