Answer:
you shouldn't be using this on exams it could go very wrong
Step-by-step explanation:
Answer:
1)8
2)25
3)20
Step-by-step explanation:
I hope this helps :)
Let me know if you have any questions
the sum of all interior angles in a polygon is
180( n - 2)
n = number of sides
now, this polygon is a quadrilateral, so it has 4 sides, so it's total is just 180( 4 - 2) = 360.

Answer:
sum of the polynomials is 
Step-by-step explanation:
Given polynomial is (7 x^3– 4 x^2) + (2 x^3 +3 x)
adding x^3 terms, now we get


Therefore the sum of given polynomial is
