Question

Find the difference

Answer 1

Combine like terms

Answer 2

polynomials...im needing to subtract these. i get confused on the negs n pos

Answer 3

Ok if you are to find the difference then you need to distribute the negative sign throughtout the second expression, is the second expression -7x^3-6x^2-9x-6???

Answer 4

yes

Answer 5

If so the it should look like this
-(-7x^3-6x^2-9x-6)
Once you distribute the negative sign you will get
7x^3+6x^2+9x+6
then combine like terms with the first expression. Does that make sense?

Answer 6

no

Answer 7

ok, now i see

Answer 8

do i do the same for the other

Answer 9

no, you should get:
5x^3+7x^2-6x+9+7x^3+6x^2+9x+6

can you combine the like terms from here?

Answer 10

i got 12x^3+13x^2+3x+15

Answer 11

is that right

Answer 12

yes, do you understand what we did?

Answer 13

yes, but when i plugged it into my webassign, it said it was wrong

Answer 14

What is the full question for the problem?

Answer 15

find the difference and its set up like i wrote it

Answer 16

we used the correct methods to come up with our answer so either the web assign is wrong or the problem is set up differently.

Answer 17

i'll ask my teacher tomorrow, thank u for helping

Answer 18

no problem. if you can post what the teacher says on here, i'm curious. thanks

Answer 19

ok