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Mathematics 20 Online
OpenStudy (anonymous):

Just one little question. Please help with exponents.

OpenStudy (mathteacher1729):

BOOMARK THIS PAGE http://www.mathsisfun.com/algebra/exponent-laws.html Scroll down a bit to see a nice table of all the exponent rules and examples. :)

OpenStudy (anonymous):

$8^{-1} + 2^{-3}$ How would we do this and please DO NOT do it in decimal form. Do in exponential form.

OpenStudy (mathteacher1729):

$$8^{-1}=\dfrac{1}{8}$$ and $$2^{-3}=\dfrac{1}{2^3}=\dfrac{1}{2\cdot 2\cdot 2}$$

OpenStudy (anonymous):

and then we just add the denominator and numerator

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