Express the following as a trinomial

Question

Express the following as a trinomial

3x²(2x+1)

Answer 1

3x^2(2x+1)

= 6x^3 + 3x^2

which is a binomial

= 6x^3 + 3x^2 + 0x^1 if you want a 3rd term, trinomial. but no one writes it that way. But they do write it in descending order of exponents like that.

or break up either one of the two x terms

= 3x^3 + 3x^3 + 3x^2

or

=6x^3 + 2x^2 + x^2