13. 2x1/2y 10x2y4 14. (2+) 2x3 8 5 1 4X3 15. 6 12 8 2x2 3 6 Directions: Simplify the following expressions. Your answer should contain only positive exponents. 16. 32.3 17. (4.3) 19. 218 تو " 96 4 20. (5-6) 18. (23) 21. 45
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