Question

Please help me as i dont quite uinderstand

Answer 1

9

Explanation:

Using the rules of exponents/ radicals

`a^(-m)` ⇔
`(1)/(a^(m) )`

`(^m)^(n)` =
`a^(mn)`

`a^{(m)/(n) }` ⇔
`\sqrt[n]{a^(m) }`

Thus

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

`((1)/(81)) ^{-(3)/(4) }`

=
`\frac{1}{81^{-(3)/(4) } }`

=
`81^{(3)/(4) }`

=
`(\sqrt[4]{81} )^3` = 3³ = 27

Thus

`(1)/(3)` × 27 = 9

Answer 2

sorry i don't know

Explanation:

but i can help you with anything else

just give me a message and i will be straight with you