Question

How Do I do foil?

Answer 1

See below.

Explanation:

To `FOIL`, is to multiply two or more factors together, to form one whole function.

`FOIL` is an acronym for the following terms which indicates how to multiply two binomials.

`F` - First

`O` - Outer

`I` - Inner

`L` - Last

So, for example, let's say we have two factors such as:

`(color(red)(x)-color(blue)(1))(color(green)(x)+color(purple)(2))`

From here, we follow the steps provided and get this;

`(color(red)x*color(green)x)+(color(red)x*color(purple)(2))+(color(blue)(-1)*color(green)(x))+(color(blue)(x*color(purple)2))`

`f(x)=x^2+2x-1x-2`

All we do here is combine like terms, and we have our function:

`f(x)=x^2+x-2`

Hope this helps!