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Express the following fraction in simplest form, only using positive exponents.start fraction, left parenthesis, minus, 4, u, to the power minus 5 , right parenthesis, cubed, divided by, minus, 5, u, to the power minus 6 , end fraction−5u −6 (−4u −5 ) 3 ​ Answer

Question

Express the following fraction in simplest form, only using positive exponents.start fraction, left parenthesis, minus, 4, u, to the power minus 5 , right parenthesis, cubed, divided by, minus, 5, u, to the power minus 6 , end fraction−5u −6 (−4u −5 ) 3 ​ Answer

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Solution

Claro, vamos a resolver el problema paso a paso.

Primero, simplifiquemos la expresión dentro del paréntesis y luego apliquemos la potencia:

(4u5)3 (-4u^{-5})^3

Cuando elevamos un producto a una potencia, elevamos cada factor a esa potencia:

(4)3(u5)3 (-4)^3 \cdot (u^{-5})^3

Calculamos cada parte por separado:

(4)3=64 (-4)^3 = -64

(u5)3=u15 (u^{-5})^3 = u^{-15}

Entonces, la expresión se convierte en:

64u15 -64u^{-15}

Ahora, dividimos esta expresión por el denominador original:

64u155u6 \frac{-64u^{-15}}{-5u^{-6}}

Dividimos los coeficientes y restamos los exponentes de las mismas bases:

645=645 \frac{-64}{-5} = \frac{64}{5}

Para los exponentes de uu:

u15÷u6=u15(6)=u15+6=u9 u^{-15} \div u^{-6} = u^{-15 - (-6)} = u^{-15 + 6} = u^{-9}

Entonces, la fracción simplificada es:

645u9 \frac{64}{5} u^{-9}

Finalmente, para expresar la respuesta con exponentes positivos, recordamos que u9=1u9u^{-9} = \frac{1}{u^9}:

6451u9=645u9 \frac{64}{5} \cdot \frac{1}{u^9} = \frac{64}{5u^9}

Por lo tanto, la fracción en su forma más simple, usando solo exponentes positivos, es:

645u9 \frac{64}{5u^9}

This problem has been solved

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