Question 88

In the following question, state whether the given statements are true (T) or false (F).

The value of $5^{- 2}$ is equal to 25.

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Solution

False:

Using law of exponents,
$a^{- m} = \frac{1}{a^{m}}$

$∴ 5^{- 2} = \frac{1}{5^{2}} = \frac{1}{25}$

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