Need some help again.

-2^-3 = ?

The answer in the book is -9/8

I thought it would be -1/8.

Help please!

Jerry

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- Apr 7th 2008, 04:42 PMJerry Cunninghamnegative exponents
Need some help again.

-2^-3 = ?

The answer in the book is -9/8

I thought it would be -1/8.

Help please!

Jerry - Apr 7th 2008, 04:48 PMtopher0805
$\displaystyle -2^{-3}$

$\displaystyle = -\frac {1}{2^3}$

$\displaystyle = -\frac {1}{8}$

The book is wrong. - Apr 7th 2008, 05:01 PMMathstud28Here you go