Answer:

1. x1 = -11 , x2 = 11

2. x1 = -13 , x2 = 13

3. x1 = -4 , x2 = 4

4. x1 = -2 , x2 = 2

5. x1 = -8/3 , x2 = 8/3

6. x1 = -12/5 , x2 = 12/5

7. the statement is false for any value of x because the power function with an even exponent is always positive or 0

8. the statement ia false for any value of x because the power function with an eveb exponent is always positive or 0

10. x1 = -2√2 , x2 = 2√2

11. x1 = -1 , x2 = 5

12. x1 = -15 , x2 = 5

13. x1 = -√30 /2 , x2 = √30 /22

14. x1 = -√115 /5 , x2 = √115 /5

15. x1 = -√5 , x2 = √5

16. x1 = -√13 , x2 = √13

17. x = -2