Question 9060
{{{(-m)^(2/3)}}} can be either


{{{((-m)^2)^(1/3)}}} or {{{((-m)^(1/3))^2}}}


These are the same thing. eg {{{(27)^(2/3)}}} can be either {{{((27)^2)^(1/3)}}} or {{{((27)^(1/3))^2}}}


Sometimes the first is easier to work out and sometimes the second version. This example... {{{((27)^(1/3))^2}}} is the better since {{{(27)^(1/3)}}} is 3.


So we then have {{{3^2}}} which is 9.


Hope this helps.


jon.