Respuesta :

using the power of power rule you
[tex] { ({a}^{x}) }^{y} = {a}^{x \times y} [/tex]
thus
[tex] ({19}^{ \frac{1}{9} } )^9 = {19}^{ \frac{1}{9} \times 9 } = {19}^{1} = 19[/tex]