Can someone tell me what foil method is?

Question

in class were doing quadratics and it takes FOREVER we have takes forever we have to draw rectangles and squares to represent x and x^2 she said later on were gonna multiply them faster by using foil i dont get it why dont we do foil now can you tell me what it is to save me time and paper

Answer 1

haha your teacher seems like shes psycho

it stand for First, Inner, Outer Last

so for example if you have

(x-2)(x+4)

you multiply the x's first because they are your "first" terms

then you multiply -2 and x because they are your "inner" terms

then 4 and x because theyre your "outer" terms

and lastly -2 and 4 because they are your "last" temrs

you should get :

x^2 -2x +4x -8

and simplify

x^2 +2x -8

Answer 2

F.O.I.L.

Front out in last

(a+b)(c+d)

f=ac

o=ad

i=bc

l=bd

Answer 3

1.) (x+3)(x+2)

First - (x)(x) =                   x^2

Outer - x(2)=                      2x

Inner - 3(x) =                      3x

Last - (3)(2) =                      6

x^2+2x+3x+6

x^2 + 5x + 6

this should help