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Simplifica la siguiente expresión: \( \left(\frac{2}{3}\right)^{5}\left(\frac{2}{3}\right)^{0}\left(\frac{2}{3}\right)^{-3}\left(\frac{81}{16}\right)^{-2} \) \( \left(\frac{3}{2}\right)^{-5}\left(\frac{2}{3}\right)\left[\left(\frac{2}{3}\right)^{5}\right]^{2}\left(\frac{8}{27}\right)^{3} \)

Ask by Adkins Cox. in Colombia
Mar 20,2025

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Answer

\[ \left(\frac{2}{3}\right)^{10} \quad \text{y} \quad \left(\frac{2}{3}\right)^{25} \]

Solution

1. Empezamos simplificando \[ \left(\frac{2}{3}\right)^{5}\left(\frac{2}{3}\right)^{0}\left(\frac{2}{3}\right)^{-3}\left(\frac{81}{16}\right)^{-2} \] a) Combinamos las potencias con base \(\frac{2}{3}\): \[ \left(\frac{2}{3}\right)^{5+0+(-3)} = \left(\frac{2}{3}\right)^2 \] b) Reescribimos la última potencia: \[ \left(\frac{81}{16}\right)^{-2} = \left(\frac{16}{81}\right)^2 \] Recordamos que \(16=2^4\) y \(81=3^4\), así que \[ \left(\frac{16}{81}\right)^2 = \left(\frac{2^4}{3^4}\right)^2 = \frac{2^8}{3^8} = \left(\frac{2}{3}\right)^8 \] c) Multiplicamos las dos componentes: \[ \left(\frac{2}{3}\right)^2 \cdot \left(\frac{2}{3}\right)^8 = \left(\frac{2}{3}\right)^{2+8} = \left(\frac{2}{3}\right)^{10} \] 2. Ahora simplificamos \[ \left(\frac{3}{2}\right)^{-5}\left(\frac{2}{3}\right)\left[\left(\frac{2}{3}\right)^{5}\right]^{2}\left(\frac{8}{27}\right)^{3} \] a) Convertimos la primera potencia: \[ \left(\frac{3}{2}\right)^{-5} = \left(\frac{2}{3}\right)^5 \] b) La expresión queda: \[ \left(\frac{2}{3}\right)^5 \cdot \left(\frac{2}{3}\right) \cdot \left[\left(\frac{2}{3}\right)^{5}\right]^2 \cdot \left(\frac{8}{27}\right)^{3} \] Notamos que: \[ \left[\left(\frac{2}{3}\right)^5\right]^2 = \left(\frac{2}{3}\right)^{10} \] c) Combinamos las potencias de \(\frac{2}{3}\): \[ \left(\frac{2}{3}\right)^5 \cdot \left(\frac{2}{3}\right)^1 \cdot \left(\frac{2}{3}\right)^{10} = \left(\frac{2}{3}\right)^{5+1+10} = \left(\frac{2}{3}\right)^{16} \] d) Simplificamos la última potencia: Observamos que \[ \frac{8}{27} = \frac{2^3}{3^3} = \left(\frac{2}{3}\right)^3 \] Entonces, \[ \left(\frac{8}{27}\right)^3 = \left[\left(\frac{2}{3}\right)^3\right]^3 = \left(\frac{2}{3}\right)^9 \] e) Multiplicamos: \[ \left(\frac{2}{3}\right)^{16} \cdot \left(\frac{2}{3}\right)^9 = \left(\frac{2}{3}\right)^{16+9} = \left(\frac{2}{3}\right)^{25} \] Respuestas finales: 1. \(\left(\frac{2}{3}\right)^{10}\) 2. \(\left(\frac{2}{3}\right)^{25}\)

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Para simplificar la expresión dada, primero utilizamos propiedades de las potencias y simplificamos cada término paso a paso. La expresión inicial es: \[ \left(\frac{2}{3}\right)^{5}\left(\frac{2}{3}\right)^{0}\left(\frac{2}{3}\right)^{-3}\left(\frac{81}{16}\right)^{-2} \left(\frac{3}{2}\right)^{-5}\left(\frac{2}{3}\right)\left[\left(\frac{2}{3}\right)^{5}\right]^{2}\left(\frac{8}{27}\right)^{3} \] 1. **Simplificamos las potencias de \(\frac{2}{3}\)**: - \(\left(\frac{2}{3}\right)^{5} \cdot \left(\frac{2}{3}\right)^{0} \cdot \left(\frac{2}{3}\right)^{-3} = \left(\frac{2}{3}\right)^{5+0-3} = \left(\frac{2}{3}\right)^{2}\) 2. **Simplificamos el siguiente término**: \(\left(\frac{2}{3}\right)^{2}\) ya lo tenemos, y ahora multiplicamos \(\left[\left(\frac{2}{3}\right)^{5}\right]^{2}\): - \[\left(\frac{2}{3}\right)^{5 \cdot 2} = \left(\frac{2}{3}\right)^{10}\] Así que ahora tenemos: \[\left(\frac{2}{3}\right)^{2} \cdot \left(\frac{2}{3}\right)^{10} = \left(\frac{2}{3}\right)^{12}\] 3. **Ahora abordamos \(\left(\frac{81}{16}\right)^{-2}\)**: - Dado que \(\left(\frac{81}{16}\right)^{-2} = \left(\frac{16}{81}\right)^{2} = \frac{256}{6561}\). 4. **Simplificamos \(\left(\frac{3}{2}\right)^{-5}\)**: - Esto se convierte en \(\left(\frac{2}{3}\right)^{5}\). 5. **Ahora la expresión es**: \[\left(\frac{2}{3}\right)^{12} \cdot \frac{256}{6561} \cdot \left(\frac{2}{3}\right)^{5} \cdot \left(\frac{2}{3}\right)\] Sumemos las potencias de \(\left(\frac{2}{3}\right)\): - \(12 + 5 + 1 = 18\), por lo que tenemos \(\left(\frac{2}{3}\right)^{18}\). 6. **Finalmente combinamos todo**: \[\left(\frac{2}{3}\right)^{18} \cdot \frac{256}{6561}\] Entonces la expresión simplificada es: \[ \frac{256 \cdot \left(\frac{2}{3}\right)^{18}}{6561} \] El resultado final es entonces: \[ \frac{256 \cdot 2^{18}}{3^{18} \cdot 6561} \] conociendo que \(6561 = 3^{8}\).

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