Question

Below you can see a table set up to multiply two polynomials. What is the coefficient of the x3-term of the product?

http://i55.tinypic.com/2epkks0.png

Answer 1

PLEASE HELP :/

Answer 2

whaterver
\[(4x*-3x^2) +(2*x^3)\]

Answer 3

-12x^3 + 2x^3 ... should be -10

Answer 4

coefficient of x^3 = -10

Answer 5

there are two x^3 terms


They are: (4x)*(-3x^2) = -12x^3 and (2)*(x^3) = 2x^3


Add them to get: -12x^3 + 2x^3 = -10x^3


So the coefficient is -10

Answer 6

I just don't get it ..

Answer 7

Fill out the table by multiplying each row by each column

Answer 8

you'll see that there will only be two x^3 terms in the table