Question

Find the indicated term in the product.

(3x+x^3-7x^5)(1+4x-3x^2) for x^3

Answer 1

can u help me

Answer 2

can someone help

Answer 3

blexting can u help me

Answer 4

Sure

Answer 5

There is a long way and a short way.

the long way is to multiply this out.. you would distribute 3 times.

Answer 6

Or. you could look at how can I get x^3 by multiplying terms. If you are not that good at math we should do it the long way.

Answer 7

(3x + x^3 - 7x^5) (1) = 3x + x^3 - 7x^5
(3x + x^3 - 7x^5)(4x) = 12 x^2 + 4x^4 - 28x^6
(3x + x^3 - 7x^5)(-3x^2) = -9x^3 - 3x^5 + 21x^7

Now we only look at the x^3 terms.

I see a x^3 and -9x^3 so if you add those we get -8x^3

Answer 8

ok

Answer 9

that is the answer

Answer 10

Yes

Answer 11

thanks and can u help me with one more

Answer 12

Sure

Answer 13

ok

Answer 14

it bassicly the same thing

Answer 15

is that okay

Answer 16

Yes

Answer 17

Find the indicated term in each product

(4+2x-x^2)(2-3x+2x^2) for x^2

Answer 18

(4 + 2x - x^2)(2) = 8 + 4x - 2x^2
(4 + 2x - x^2)(-3x) = -12x - 6x^2 + 3x^3
(4 + 2x - x^2)(2x^2) = 8x^2 + 4x^3 - 2x^4

do you understand how I get these?

Answer 19

yes

Answer 20

OK.. now look at all the terms on the right. typically we would add all of these up to get the answer, but they only want the x^2 term

Answer 21

So I see... -2x^2 and -6x^2 and 8x^2

Answer 22

So add those up.

-2x^2 - 6x^2 + 8x^2 = 0x^2 so actually you have no x^2 terms in the answer. So I guess I would say 0x^2

Answer 23

wow thanks i got it

Answer 24

i gave u a medal

Answer 25

Thanks... good luck