Respuesta :

Answer:

[tex]r^n=a[/tex]

Step-by-step explanation:

Here, the given expression is,

[tex]a^{\frac{1}{n}}=r[/tex]

[tex](a^{\frac{1}{n}})^n=r^n[/tex]         ( a = b ⇒ [tex]a^n=b^n[/tex] )

[tex]a^{\frac{1}{n}\times n} = r^n[/tex]         ( Because [tex](a^m)^n=a^{m\times n}[/tex] )

[tex]a^1=r^n[/tex]

[tex]a=r^n[/tex]

Hence, First option is true.