Question

Can anyone please help with this?

How is FOIL used in factoring polynomials?

Answer 1

(2x-5)(x-4)
first: 2x*x= 2x^2
Outside: 2x*(-4)=-8x
inside: -5*x=-5x
last: (-5)*(-4)=20
2x^2-8x-5x+20
2x^2-13x+20

Answer 2

Can you explain that in words?

Answer 3

factoring is basically doing foil backwards

Answer 4

Okay, but how is FOIL used in factoring polynomials?

Answer 5

(x + 2)(x - 3) first foil this

x^2 -3x + 2x -6
x^ -1x -6 that is foiling

Answer 6

Ok..

Answer 7

x^2 - 1x -6 when you factor, you start with a foil solution.

( )( ) now ask yourself , what times what = x^2?

(x )(x ) now ask what 2 numbers mult get the last number

Answer 8

(x - 3 ) ( x + 2)

Answer 9

now with factoring....the two numbers need to multiply to get the lastss
but add to get the middle number

Answer 10

does that help ?

Answer 11

Yes, thank you very much.