GI = 15, HI = 5b +10, GH = 2b - 5.

Find the value of b and the length of HI

Step-by-step explanation:

we cannot see any graphic or so.

no clue, what these sides (?) are, and how they are related to GI and to each other.

so, it is not possible to give you an answer.

-13n^4 + 11n^3 - 3n^2 - 3

Step-by-step explanation:

*I think you mistyped the question. I belive the 13n^4 is supposed to be negative*

1.First, we need to add common values (all the n^4s together, all the n^3s, etc.) from the two sets.

-13n^4

12n^3 + -n^3

8n^2 + -11n^2

-3

2. Now lets simplify

-13n^4

11n^3

-3n^2

-3

3. Laststly, we put them all into one expression!

-13n^4 + 11n^3 - 3n^2 - 3