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1. (1+5+25+125):4= 156:4 = 39

2. 4²×4⁶=4⁸ = 16⁴= 256²= 65536

3. 8²×8³= 8⁵= 8×64²= 8×4096= 32768

4. 16⁸:16²= 16⁶= 256³= 16777216

5. 15¹²:5¹²= 3¹²×5¹²:5¹²= 3¹²= 531441

6. 6⁴:4³= 2⁴×3⁴:2⁶= 3⁴:4= 81:4= 20,25

7. 9⁹×27³:81⁵= 3¹⁸×3⁹: 3²⁰= 3⁷= 2187

8. 2³×4²×8³= 2³×2⁴×2⁹=2¹⁶= 65536

9. 5⁹:125³×25²= 5⁹:5⁹×5⁴=5⁴= 625

10. (4×3)²= 12²= 144

11. (7×4)³= 28³= 21952

12. (16:4)²= 4²= 16

13. (2⁴)⁶= 2²⁴= 16777216

14. (8¹⁰⁰)⁰=1

15. (2²+9+4⁴+5⁵)⁰=1

16. (5×1)⁰=1

17. 10+5(5⁰×6²:2²-2×3⁴⁰:3³⁹)=

10+5(36:4-2×3)= 10+5(9-6)=

10+5×3=10+15=25

18. 7(3+5+10)= 7× 18= 126

19. 5(9+6-12)= 5× 3= 15