Express the following with positive exponents:
$4^{- 7}$

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Solution

$= 4^{- 7}$ (we know $a^{- m} = \frac{1}{a^{m}}$ )
$= \frac{1}{{(4)}^{7}}$

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Question 2(v)
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Question 2(v)
Simplify and express the result in power notation with positive exponent:

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