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Mathematics for IGCSE & O level - Indices 2 (Section 4 - No. 2)

What value of *x* satisfies ( x^{-1} = rac{1}{5} )?
5
-5
( rac{1}{5})
0

Vysvětlení

Because the question states that ( x^{-1} = rac{1}{x} ), and ( rac{1}{x} = rac{1}{5}), then x = 5.

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