Question 619108
{{{(4x + 1) (2x^2 + x + 1)}}}
When multiplying polynomials, you multiply each term of one by each term of the other:
{{{4x*2x^2 + 4x*x + 4x*1 + 1*2x^2 + 1*x + 1*1}}}
Simplifying...
{{{8x^3 + 4x^2 + 4x + 2x^2 + x + 1}}}
{{{8x^3 +6x^2 + 5x + 1}}}