Question

porfa resolver le doy 20 puntos

Answer 1

Respuesta:

1)

${3}^{x - y + 1} . {9}^{ \frac{y}{2} } = 27$

${3}^{x - y + 1} . {( {3}^{2} )}^{ \frac{y}{2} } = {3}^{3}$

${3}^{x - y + 1} . {3}^{ 2.\frac{y}{2} } = {3}^{3}$

${3}^{x - y + 1} . {3}^{y } = {3}^{3}$

${3}^{x - y + 1 + y} = {3}^{3}$

${3}^{x + 1} = {3}^{3}$

$x + 1= 3$

$x = 3 - 1$

$x = 2$

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2)

${3}^{ {x}^{3} } = 729$

${3}^{ {x}^{3} } = {3}^{6}$

${x}^{3} = 6$

Calcula el valor de

${( { x}^{ - 1})}^{3} = {( { x}^{3})}^{ - 1} = {(6)}^{ - 1} = \frac{1}{6}$