Complete the statement to describe the expression abc + defabc+defa, b, c, plus, d, e, f.

The expression consists of
terms, and each term contains
factors.

The expression abc + def consists of two terms, "abc" and "def". Each term contains three factors, which are represented by the variables a, b, and c in the first term, and d, e, and f in the second term. The plus sign (+) is used to indicate addition between the two terms.

terms are separated by + and - signs.

Look to see how many variable names appear in each term.

and stop repeating things!