Mathematics for IGCSE & O level - Indices 2 (Section 3 - No. 38)

What is the value of ( 5^{-2} )?

-10

(rac{1}{25})

10

25

Spiegazione

The negative exponent indicates a reciprocal: (5^{-2} = 1 / 5^2 = 1/25).

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