help im doing product of polynomials
find the product:

(3x-4y)(x-y)

Question

help im doing product of polynomials
find the product:

(3x-4y)(x-y)

saifoo.khan · Answer

Do you know about FOIL method?

saifoo.khan · Answer

https://www.khanacademy.org/math/algebra/multiplying-factoring-expression/multiplying-binomials/v/multiplying-polynomials1

anonymous · Answer

i know it but i still don't understand it

saifoo.khan · Answer

Okay. Want to do it with me?

anonymous · Answer

yea

saifoo.khan · Answer

I'll let @OnePieceFTW give it a shot.

onepieceftw · Answer

To FOIL a binomial like this multiply the first term of each so 3x times x, then multiply the outer terms 3x times -y, then the inner terms,  -4y times x, and lastly the last terms, -4y times y

anonymous · Answer

@OnePieceFTW  that sorta helps i think my problem is the subtraction within the parenthesis is what gets me

onepieceftw · Answer

Alright, so 3x times -y would be -3xy. since that y is negative it makes the other term negative.

anonymous · Answer

ooh ok that makes since.

anonymous · Answer

@OnePieceFTW  is it 3x to the 2 -7xy-4yto the 2