# Negative Exponents

An exponent can be negative . A number with a negative

exponent is the same as 1 divided by the number with a

positive exponent .

Example: Write with a positive exponent z^{-4}.

Solution : Write as a fraction with a positive exponent.

1/z^{4}

Therefore z^{-4} = 1/z^{4}

**Scientific Notation:
**Scientific Notation is used to name large numbers such as

324,000. A number in scientific notation has two factors .

You can find the large number by multiplying .

3.24 * 10^{5}=3.24 * 100,000=324000. = 324,000

Move the decimal point one place for each zero in the

power of ten . This is the same as the exponent in the

second factor . Move to the right when the exponent is

positive .

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