Question

Multiplying Polynomials

Answer 1

How may I help? :D

Answer 2

Give an example and you will get help.

Answer 3

The following polynomial in x has a coefficient of 2 for the quadratic (degree four) term:\[(3x ^{4}+x ^{3}-19x ^{2}+5x-2k)(x ^{4}+2x ^{3}+3x+\]

where K is a constant. What is the constant term of the polynomial?

Answer 4

is there something missing? :/

Answer 5

first of all we need to open it

Answer 6

like at the end of the equation .-.

Answer 7

Nope thats how it is

Answer 8

so it ends with a +

Answer 9

(3x^4+x^3-19x^2+5x-2k)*(x^4+2x^3+3x+.?

Answer 10

^ ?

Answer 11

Yea, its a weird question

Answer 12

wat lol

Answer 13

Is there dots ?

Answer 14

ya :/ it should of at least ended with a close in the parenthesis

Answer 15

maybe 4x?

Answer 16

Nope, its a weird question

Answer 17

Read the directions

Answer 18

ok

Answer 19

4 ?

Answer 20

it's 4

Answer 21

woops yeah 4

Answer 22

not 4x

Answer 23

well

Answer 24

https://gyazo.com/faa8deed4b9b4670ce49348725720a55

Answer 25

there is a scroller to the right!

Answer 26

scroll it! there will be a complete question

Answer 27

LOL

Answer 28

one queshtion perpost

Answer 29

LOL i didnt see that

\[(3x ^{4}+x ^{3}-19x ^{2}+5x-2k)(x ^{4}+2x ^{3}+3x+k)\]

Answer 30

yay

Answer 31

You have to multiply all that terms ( HELL ) and than take the coefficient of the x^4 term and make it = 2

Answer 32

your not in college becuse im doing this in 7th grad

Answer 33

Can you explain more @TrojanPoem

Answer 34

@cmtboy2 please stop spamming this post

Answer 35

The question says that the coefficient of x^4 term = 2

if you multiplied both polynomials you will get a coefficient for x^4 with k

Solve for k.

Answer 36

But don't mutiply all , just multiply the terms which will get you x^4
like x^3 * x , so on.

Answer 37

So we leave 5x etc out

Answer 38

You take a term from the first polynomial let's say x^4 , and multiply it in a term in the second one that will result in x^4

The only term that will make x^4 remain as is , is the k

then take x^3 multiply it times the x term in the second polynomial
and so on

sum all terms with x^4 you have x^4 coefficient.

Answer 39

this is what i got hahahaa using method of idiot:

3x^8+7x^7−24x^5+kx^4−17x^6+13x^4−3kx^3−57x^3−19x^2k+15x^2−kx−2k^2

Answer 40

stop reporting me

Answer 41

stop spamming

Answer 42

@AlexandervonHumboldt2 , hhhhhhhhhh really Pro in multiplying polynomials

Answer 43

Oh ok i see i see

Oh wait igtg for a bit, finish explaining and ill be back

Answer 44

ok

Answer 45

@pooja195

Answer 46

?

Answer 47

Sorry for that, where were we?

Answer 48

you were about to multiply all terms
i suggest u to draw a box
multiply each term and write the result in a box
it will help you to stay away from mistakes and you will not forget to multiply any term