A polygon has 7 sides. The interior angle measures are 131, 127, 134, 122, 132, 120°, and x. Find the value of x.

1. 3.4/4

2. 0.8/7

3. 0.5 x 3

4. 0.9 x 6

5. 10.8

6. 2.35

7. 0.567

8. 9.35

9. 0.02

10. 0.06

11. 0.16

12. 0.42

13. 0.63

14. 5.6

15. 8.1

16. 9.9

17. 0.28

18. 0.48

19. 0.27

20. 0.49

21. 0.45

22. 0.72

23. 0.9

24. 0.88

25. 0.75

26. 0.16

27. 0.328

28. 0.495

29. 0.72

30. 1.068

by the distributive property of all reals, we have that

p(n) = 2n^2(n^2 + 2n - 3)

by virtue of factoring, it is true that p(n) = 2n^2(n+3)(n-1).

should we want p(n) = 0, we know that at least one of 2, n^2, n+3, or n-1 needs to be zero by the zero factor property. 0 times anything is zero.

so the answer is n = 0, n = -3, and n = 1 as the roots because those are the values of n for which p(n) is 0.