Задача Задача №3227118
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To evaluate \((-0.2)^{-4}\):
Recall that a negative exponent indicates a reciprocal: \[ a^{-n} = \frac{1}{a^{n}} \]
So, \[ (-0.2)^{-4} = \frac{1}{(-0.2)^{4}} \]
Calculate \((-0.2)^4\):
Since the exponent is even, the negative sign will disappear: \[ (-0.2)^4 = (0.2)^4 \]
- Compute \(0.2^4\):
\[ 0.2^2 = 0.04 \] \[ 0.2^4 = (0.2^2)^2 = (0.04)^2 = 0.0016 \]
- Now, take the reciprocal: \[ \frac{1}{0.0016} = \frac{1}{\frac{16}{10000}} = \frac{10000}{16} = 625 \]
Final answer:
\[ (-0.2)^{-4} = \boxed{625} \]