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beautiful_girl asked:

30 Oct 2009

Foil Method! Help!!

Guys, please help me! My teacher told me to search the mathematician who discovered the FOIL Method.This is in Algebra subject...But I can't find it in the internet or books....So I'm totally freaking out! I can't present anything!The deadline is on November 9...I just want to pass it early for some points...Please guys..help!

Answers

kirstiefrog

kirstiefrog says:

Posted on 30 Oct 2009

hi, this may take me a while and i really don't want to sound like a maths geek but here goes.

plus it's gonna be harder to explain without the use of arrows. I'm sorry if it looks complicated but it's simple really...

and sorry that i can't put the squared symbol in :P



say you have to sets of brackets; (5y+1) (y+8)

FOIL is a method of expanding them...



the F stands for firsts. and so you time the first terms in each bracket:

5y x y= 5y squared



O stands for outsides, and so you times the outside terms in each bracket:

5y x 8 = 40y



I is for insides and so you times the inside terms in each bracket:

1 x y=1y



L is for lasts and you times the last terms in each bracket:

1 x 8=8



then you add it all together:

5y squared + 40y + 1y +8



then simplify:



5y squared +41y +8



hope this makes sense, it would be a lot easier to have someone properly talk to you but oh well.



have fun with your maths (:




kirstiefrog

kirstiefrog says:

Posted on 30 Oct 2009

you could draw arrows to the terms you are multiplying, such as between the 5y and the y. when you do it for all 4 is sort of looks like a beak.



like this:

http://i.ehow.com/images/GlobalPhoto/Articles/4849816/foil2-main_Full.jpg



plus there is LOADS of websites, just type in Foil method :P

barbipixi

barbipixi says:

Posted on 31 Oct 2009

i keep finding the name Schaum but really i couldn't find anything either

kirstiefrog

kirstiefrog says:

Posted on 30 Oct 2009

read other one first :P

bethanyjl

bethanyjl says:

Posted on 30 Oct 2009

blaaah! This is why i dislike math! hahah

beautiful_girl

beautiful_girl says:

Posted on 01 Nov 2009

Hai kirstiefrog!!....I just wanna say thanks for answering my question....and I really appreciate your effort in explaining it....but I just wanna make my question clearer ok...I am finding the name of the mathematician who discovered the FOIL method....but I'm having a hard time in searching it....so I asked for help....anyway, I really thank you !

beautiful_girl

beautiful_girl says:

Posted on 01 Nov 2009

Hi BarbiPixi! Thanxx for the answer....uhmm....who's schaum?Is he the one who discovered the FOIL Method?

kirstiefrog

kirstiefrog says:

Posted on 02 Nov 2009

oh i see, sorry i'm not much help there :P

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