negative exponents

Jareth McDougal said:
b to the power of negative 3 = 1 over 27

b3 = 127\displaystyle b^{-3} \ = \ \frac{1}{27}

Use the law of power:

b3 = 1b3\displaystyle b^{-3} \ = \ \frac{1}{b^3}

and continue....

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