Question

example for the foil method

Answer 1

"foil" is for lousy math teachers. if you have to term by two terms to multiply you have to do 4 multiplications, but if you have two terms by three terms you need 6

Answer 2

lol .... they said foil

Answer 3

27*36 is foil

Answer 4

First outer Inner Last (2+x)(2+x) 4+2x+2x+x^2

Answer 5

the distributive law says
\[(a+b)(c+d)=ac+ad+bc+bc\] in any order you choose

Answer 6

20 +7
30 +6
---------
600 + 210
120 + 42
----------------
600 +330 + 42

Answer 7

ok example of (x-8)(x+3)

Answer 8

23
x 12
_______
6
4
3
2
_________
2 7 6

Answer 9

x -8
x +3
-----
x^2 -8x
3x -24
------------
x^2 -5x -24

Answer 10

x^2+3x-8x-24

Answer 11

x^2-5x-24

Answer 12

(x-9)(x+9)

Answer 13

napiers bones :)

Answer 14

x - 8
x + 3
_________
3x -24
x^2-8x
____________
\[x^2-5x-24\]

Answer 15

x^2+9x-9x-81

x^2-81

Answer 16

\[(a+b)(a-b)=a^2-b^2\]

Answer 17

ok 1 more..(X^2+6)(X^2-2)

Answer 18

lol ..... 3 more

Answer 19

lol..sorry

Answer 20

what would you try to make of this one?

Answer 21

seeing how we already are experts at it and all ;)

Answer 22

lol... the same.. foil method and thanks alot

Answer 23

when i am president i am outlawing foil unless has to do with fencing

Answer 24

lol ikr... hate it..

Answer 25

and making potroast for dinner on sundays ...

Answer 26

and boyscout campouts :)

Answer 27

that too. cover your turkey maybe.

Answer 28

isn't that thing on the back of a car called a foil too?

Answer 29

ok ok.. back 2 my ? lol :-)

Answer 30

(X^2+6) (X^2-2)

(X^2+6)(X^2) +(X^2+6)(-2)

(X^2)(X^2) +(6)(X^2)+(X^2)(-2)+(6)(-2)

and simplify

Answer 31

you really should think about getting your hands dirty and trying, even if you get it wrong

Answer 32

theres always an eraser :)

Answer 33

lol again sorry and thx... i know it.. but im kinda doing alot right now lol

Answer 34

come here

Answer 35

http://openstudy.com/groups/mathematics/updates/4e70dcd40b8bbc8fb327fbb6