Answer:

Explanation:
The difference of polynomial means subtracting the two polynomials
We have been given two expressions
and 
We need to subtract the given two polynomials
Given expression can be rewritten as

After simplifying means solving like terms that is the term of same variable we will get

If you connect those 7 points, it makes a heptagon.
0.048
If i am wrong let me know
Step-by-step explanation:
Sure, that's easy. Although the equation isn't clear to me with characters. I can't seem to figure out whether the x is a multiplication symbol or the variable x. Would you mind writing it on paper and uploading a picture? Then I can help