The answer is 15 if you don’t have it already dis thing ain showing no date
4x^5+2x-1 would be an example, fifth dregree means the highest exponent is 5. hope this helps.
If they want you to find the perimeter I guess you add all sides so 9+9+9+9+30 = 66
You can factor this
x^2 + 10x + 16 = 0
(x + 8)(x + 2) = 0
so x + 8 =0 or x + 2 = 0
x = -8, -2
