+73 Evaluate each of the expressions if a = -2, b = 5, c = -4, and d = 6.
1. 3c - 2b
2. 8b + 2c
3. -b² + b
4. 6c²
5. c² - 2d
6. 2a² + 3b²
7. 2(a + b)
8. 4(2a - d)
9. a(b + 3c)
10. 8b/5c
11. 3d + 2c/b
12. 3d - 2b/5a + d
13. d² - b²
14. (d - b)²
15. (d - b)(d + b)
16. d³ - b³
17. (d - b)³
18. (d - b)(d² + db + b²)
19. b² + a²
20. (b + a)²
21. a² + 2ad + d²
Evaluate each of the expressions if x = -2.34, y = -3.14, and z = 4.12. Round your answer to the nearest tenth.
22. y - 2z
23. x² + y²
