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Beräkna utan räknare: \( \sqrt[3]{27^{2}} \)

Ask by Carrillo Weaver. in Sweden
Jan 23,2025

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Answer

\(\sqrt[3]{27^{2}} = 9\).

Solution

För att beräkna \(\sqrt[3]{27^{2}}\) utan räknare kan vi förenkla uttrycket steg för steg: 1. **Uttryck 27 som en potens av 3:** \[ 27 = 3^3 \] 2. **Beräkna \(27^2\):** \[ 27^2 = (3^3)^2 = 3^{3 \times 2} = 3^6 \] 3. **Ta kubikroten av \(3^6\):** \[ \sqrt[3]{3^6} = 3^{6/3} = 3^2 = 9 \] **Svaret är 9.**

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För att beräkna \( \sqrt[3]{27^{2}} \), börjar vi med att förenkla uttrycket. Vi vet att \( 27 = 3^3 \), så vi kan skriva \( 27^{2} \) som \( (3^3)^{2} = 3^{6} \). Nu kan vi ta kubroten: \[ \sqrt[3]{27^{2}} = \sqrt[3]{3^6} = 3^{6/3} = 3^{2} = 9. \] Svaret är alltså 9!

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