In Exercises 1-20, evaluate each expression, or state that the expression is not a real number. 2. V16 4. -V16 1. V36 3. -V36 5. V-36 6. V-16 7. V 25 8. V 49 9 4 9. 10. V 16 25 11. V0.81 12. V0.49 13. -Vo.04 14. V0.64 - 15. V25 – 16 16. V144 + 25 17. V25 - V16 18. V144 + V25 19. V16 – 25 20. V25 - 144

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