This is done by multiplying each term in the first parentheses by each term in the second parentheses. This is also known as the FOIL method (First, Outside, Inside, Last).
\[
(3x - 4)(x + 1) = 3x \cdot x + 3x \cdot 1 - 4 \cdot x - 4 \cdot 1
\]
Show more…