Question

what is \[64^{-1\over3}\]

Answer 1

do you know your laws of indices?

Answer 2

is it -4?

Answer 3

not quite

Answer 4

ok, firstly, what would this be?:\[x^{-a}=\]

Answer 5

\[64^{-1\over3}~~\implies~~-1\sqrt[3]{64}~~\implies~~-1(4)~~\implies~~-4\]

Answer 6

no - please try and answer the question I gave above - it will help you understand this better

Answer 7

umm....idk

Answer 8

have a look at this site: http://www.mathsisfun.com/algebra/exponent-laws.html

it will help yu understand the various laws of exponents better.

if you are still stuck after this, then let me know and I will try and help you further.

Answer 9

\[ {1\over \sqrt[a]{x}}\]

Answer 10

not quite - have another go

Answer 11

\[a\over x\]

Answer 12

:/ please study that site - it will help you if you put some time into it.

Answer 13

im trying :(

Answer 14

if you look a little further down on that web page (under the section "Laws of Exponents") then you will see a list of all the laws.

Answer 15

look for the one listed as \(x^{-n}=...\)