Respuesta:
la 1) - 2/3
Explicación paso a paso:
la 1)
[tex]2 {}^{x + 1} \times 4 {}^{x + 2} = 8 \\ 2x {}^{x + 1} \times 4 {}^{x + 2} \\ 2 {}^{x + 1} \times 2 {}^{2x + 4} = 2 {}^{3} \\ 2 {}^{3x + 5} = 2 {}^{3} \\ 3x + 5 = 3 \\ 3x = 3 - 5 \\ 3x = - 2 \\ x = - \frac{2}{3} [/tex]
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Respuesta:
la 1) - 2/3
Explicación paso a paso:
la 1)
[tex]2 {}^{x + 1} \times 4 {}^{x + 2} = 8 \\ 2x {}^{x + 1} \times 4 {}^{x + 2} \\ 2 {}^{x + 1} \times 2 {}^{2x + 4} = 2 {}^{3} \\ 2 {}^{3x + 5} = 2 {}^{3} \\ 3x + 5 = 3 \\ 3x = 3 - 5 \\ 3x = - 2 \\ x = - \frac{2}{3} [/tex]