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Slide 2

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Rule One ­ Negative Indices
· a to the power of ­n is equal to 1
over a to the power of n
·The minus sign creates what is
known as a reciprocal.
·Example: 2 to the power of -2 =
¼ or 2 to the power of -3
=…read more

Slide 3

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Rule two: Fractional Indices
·a to the power of 1 over n is equal to
the nth root of a
·For example: 8 to the power of is
equal to 2 because 2 is the cubed root of
8
·16 to the power of a half = 16 which
=4…read more

Slide 4

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Harder fractional indices
·These are a littler bit harder.
But can easily be solved by
doing one step at a time.
·For example: 27 can be split
into (27 )² which can also be
written as (³ 27)².
³ 27 = 3
3² = 9 and therefore
27 = 9…read more

Slide 5

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Negative fractional indices
For
example:
1) First the minus makes is a reciprocal. 1
64
2) We need to split the fraction up. 1
(³ 64)².
³ 64 = 4,
4² = 16 and therefore
(³ 64)² = 1/16…read more

Slide 6

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The easiest rule!
...to forget!
Anything to the Power of 0 = 1…read more

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