How do you write a polynomial in standard form, then classify it by degree and number of terms # 6b^3 + 9b^2 - 12b#?
This is already in standard form.
To classify via number of terms, we count how many terms there are in the expression. A term is a variable and it's exponent.
Now let's classify it via the degree
Since the expression is already in standard form, all we look at is the leading term, and its exponent