How do you foil with this problem: x (3x-4x squared)

Question

anonymous · Answer

$$ x (3x-4x^2)$$is this it?

anonymous · Answer

Yes

anonymous · Answer

you can foil out another x

because there is an x in 3x and in 4x^2

anonymous · Answer

How do i foil?

anonymous · Answer

sorry i don't remember from algebra... trying to study for my praxis

anonymous · Answer

you are basically pulling out the x from each of the x and you are pulling it out of the parentheses 
$$x(3x−4x^2)$$$$x(3x−4x*x)$$$$x*x(3−4x)$$

anonymous · Answer

see how 4x^2 had two x and even if we pulled out one x there is still one left inside 

while 3x only had one x so when we pulled it outside it went away

anonymous · Answer

okay

phi · Answer

FOIL is used to remember how to multiply two binomials (x+y)(a+b)
It is short for first  (multiply the first terms together xa
Outer  x*b
Inner y*a
Last y*b
then add together xa+xb+ya+by
for your problem, you do not have two binomials
You can use the distributive law:
x(a+b)= x*a+x*b
in your problem
x (3x-4x^2) =  3x^2-4x^3