Question

Numbers to the power of a fraction help pls

Answer 1

see explanation

Explanation:

Using the rules of exponents

•
`a^{(m)/(n) }` ⇔
`\sqrt[n]{a^(m) }`

•
`a^(-m)` ⇔
`(1)/(a^(m) )`

(a)

`27^{(1)/(3) }` =
`\sqrt[3]{27}` = 3

(b)

`25^{-(1)/(2) }`

=
`\frac{1}{25^{(1)/(2) } }` =
`(1)/(√(25) )` =
`(1)/(5)`