Question:
Tick (✓) the correct answer
The value of $(-3)^{-4}$ is
(a) 12
(b) 81
(c) $-\frac{1}{12}$
(d) $\frac{1}{81}$
Solution:
(d) $\frac{1}{81}$
$(-3)^{-4}=\frac{1}{(-3)^{4}}=\frac{1}{(-1)^{4} \times(3)^{4}}=\frac{1}{(3)^{4}}=\frac{1}{81}$
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