Question
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a) \( \left(x^{4} \cdot x^{-8}\right)^{3} \)

Ask by Dickson Howell. in Colombia
Mar 13,2025

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Tutor-Verified Answer

Answer

La expresión simplificada es \( \frac{1}{x^{12}} \).

Solution

Simplify the expression by following steps: - step0: Solution: \(\left(x^{4}\times x^{-8}\right)^{3}\) - step1: Multiply the terms: \(\left(x^{-4}\right)^{3}\) - step2: Transform the expression: \(x^{-4\times 3}\) - step3: Multiply the numbers: \(x^{-12}\) - step4: Simplify: \(\frac{1}{x^{12}}\) Para simplificar la expresión \( \left(x^{4} \cdot x^{-8}\right)^{3} \), seguimos estos pasos: 1. **Multiplicación de potencias**: Cuando multiplicamos potencias con la misma base, sumamos los exponentes. Así que: \[ x^{4} \cdot x^{-8} = x^{4 + (-8)} = x^{-4} \] 2. **Aplicar la potencia externa**: Ahora elevamos \( x^{-4} \) a la potencia de 3: \[ (x^{-4})^{3} = x^{-4 \cdot 3} = x^{-12} \] 3. **Convertir a forma positiva**: Para expresar \( x^{-12} \) en forma positiva, usamos la propiedad de las potencias negativas: \[ x^{-12} = \frac{1}{x^{12}} \] Por lo tanto, la expresión simplificada es: \[ \frac{1}{x^{12}} \]

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The Deep Dive

To simplify \( \left(x^{4} \cdot x^{-8}\right)^{3} \), we start by applying the product of powers rule, which states that when multiplying exponents with the same base, we add the exponents. So, \[ x^{4} \cdot x^{-8} = x^{4 + (-8)} = x^{-4}. \] Now we have \( (x^{-4})^{3} \). According to the power of a power rule, we multiply the exponents: \[ (x^{-4})^{3} = x^{-4 \cdot 3} = x^{-12}. \] Therefore, the final simplified expression is \( x^{-12} \). You can also express it as \( \frac{1}{x^{12}} \) if you prefer to avoid negative exponents!

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