Question

Something's wrong...could someone please check my work? Attachments to come...

Answer 1

Here's the question:

Answer 2

Here's the work that I've done:

Answer 3

Only one of the part's is wrong, but I'm not sure which one or what I did wrong...

Answer 4

Could anyone help me?

Answer 5

Yes I am checking it.

Answer 6

Thanks so much! I've been waiting all night! :D

Answer 7

There will be -40x^3 ? Last one

Answer 8

instead of -800x^6 there may be -40x^3

Answer 9

@PoofyPenguin What do you think? I am rechecking my soln ... wait for 5 min.

Answer 10

I think that I made the mistake in that area but what about the 20x^3?

Answer 11

Yes...

Answer 12

mistake is here

Answer 13

@PoofyPenguin

Answer 14

Let me give it a try.

Answer 15

Yep! That was correct! Could you please explain what I did wrong? Where did the 20x^3 go?

Answer 16

see here : http://assets.openstudy.com/updates/attachments/50888f89e4b004fc96eb7b9e-sheldoneinstein-1351133302485-capture.jpg

Answer 17

You wrote \[\large{-40x^3}\] instead of -2 ... and that is the MISTAKE.

Answer 18

Alright! I see it now! Thanks so much for all of your help! :D

Answer 19

No problem.