Question

how do you find the exact value of 3^-2 , giving the answer in a fraction?

Answer 1

Answer:

x ^ -n = 1/x^n

3^-2 = 1/3^2 = 1/9

Answer 2

Answer:

$\frac{1}{9}$

Step-by-step explanation:

It is a property of exponents that $a^{-m} = \frac{1}{a^{m} }$

∴ By this property, $3^{-2} = \frac{1}{3^{2} }$

∵ 3² = 9

Hence, $3^{-2}$ = $\frac{1}{9}$

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