Question

State F.O.I.L methood using your actual example and show how you would use it to find the standard formula.

Answer 1

first
outside
inside
last

Answer 2

this could be used in a problem such as 10x+12x+6

Answer 3

Thank you marlins0412! :)
Saved my life!

Answer 4

your welcome what did you need this for?

Answer 5

Working on a math worksheet for school. Teacher taught this to us today.

Answer 6

This month* not today

Answer 7

oh ok cool im guessing 10th grade or 9th?

Answer 8

8th

Answer 9

wow im in 10th and this was the first chapter in the book.

Answer 10

Haha, my school is advanced in most subjects, i got algebra II next year i think

Answer 11

wow thats really good.alright well off to my homework aswell se ya around!

Answer 12

Good luck! Haha :)

Answer 13

\[\begin{align}
\text{F.O.I.L. = First Outside Inside Last}\\
\hline \\
&(ax+b)(cx+d)\\ \ \\
\text{First:}&(\color{blue}{ax}+b)(\color{blue}{cx}+d)\to \color{blue}{ax}\cdot\color{blue}{cx}=\color{blue}{acx^2}\\
\text{Outside:}&(\color{green}{ax}+b)(cx+\color{green}{d})\to \color{green}{ax}\cdot\color{green}{d}=\color{green}{adx}\\
\text{Inside:}&(ax+\color{red}{b})(\color{red}{cx}+d)\to \color{red}{b}\cdot\color{red}{cx}=\color{red}{bcx}\\
\text{Last:}&(ax+\color{orange}{b})(cx+\color{orange}{d})\to \color{orange}{b}\cdot\color{orange}{d}=\color{orange}{bd}\\
\hline \\
(ax+b)(cx+d)&=\color{blue}{acx^2}+\color{green}{adx}+\color{red}{bcx}+\color{orange}{bd}
\end{align}\]