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# 8 3 zero & negative - day 1

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### 8 3 zero & negative - day 1

1. 1. P. 504 – Key Concepts
2. 2. Zero & Negative Exponents Section 8.3 P. 503
3. 3. Powers of TensExponent, 2 1 0 -1 -2 -3 n 102 101 100 10-1 10-2 10-3 10n 100
4. 4. Negative ExponentsExponent, 3 2 1 0 -1 -2 -3 n Power, 8 4 2 2n Power, 27 9 3n Power, 64 16 4n
5. 5. Exponent Rules• Let ‘a ’ be a nonzero number and let ‘n’ be a positive integer, A nonzero number to the zero power is 1: a0 = 1 (a = 0) 20 = 1 (-2)0 = 1 a-n is the reciprocal of an: therefore a-n = 1 / an , (a = 0 ) so 2-3 = 1/ 23 an = 1/a-n 23 = 1/ 2-3
6. 6. 2 12 2 2 43 y4 10
7. 7. • In Algebra, expressions need to be rewritten using only POSITIVE exponents. 2 3 2x y 3 4 5g h 3 3 4 4
8. 8. 1 24 33 24
9. 9. 2 2 2(5a) 5 a 2 3(4n ) 3 24 x y
10. 10. 2 2 3 1 44 5
11. 11. • Assignment: P. 506 3-26• Copy the problem, then simplify. There can be NO NEGATIVE exponents in your final answer.