What is FOIL? How do you use FOIL? Please help me.

Question

anonymous · Answer

This should help you figure it out>>>> http://en.wikipedia.org/wiki/FOIL_method

amistre64 · Answer

FOIL is a way to remember how to multiply,  in case you forget how to mutliply ....

anonymous · Answer

Ok, if you have a factored form of a quadratic equation say: (x + 5)(x +3) you use it to turn into the non factored form.. 

YOu multiply the first values in both parenthesis, so x times x = x squared
Then, the Outer values, so x times 3 = 3
the same for inner, 5x
and then the last, 15
Now you have x^2 + 3x + 5x + 15
x^2 + 8x + 15

anonymous · Answer

FOIL stands for : First Outer Inner Last

amistre64 · Answer

for example:

(14) * (23)

(10+4)  (20+3)

Firsts:  10*20
Outs:   10*3
Ins:       4*20
Lasts:   4*3

add em up:    200+30+80+12

amistre64 · Answer

of course:  FILO is just as effective, and IFOL, and LIFO, and whatever other combination you want to make of the letters

goldphenoix · Answer

Thank you, amistre64 and ChanHamm. I undersatand what FOIL is now. Thank you so much!

amistre64 · Answer

good luck ;)

anonymous · Answer

Sure! @GoldPhenoix