Question 257246
So what did you try?
We can't tell you how you went wrong if we don't know what you tried.


{{{(-3125a5)^(2/5)}}}

Let's look at the exponent part


we have     {{{(a^5)^(2/5)=a^(5*2/5)=a^2}}}


and       {{{3125^(2/5)}}}=25
but we have the -1 to deal with
and     {{{(-1)^2=1}}}

   and     {{{(1)^(1/5)}}}=1


      so {{{(-1)^(2/5)}}} =1


={{{25*1*a^2}}}
={{{25a^2}}} 
or {{{(-1)^(2/5)*25a^2}}}

I cannot decide for sure if (-1)^(2/5) actually = 1
but if you square the -1 you get 1
if you take the fifth root of 1 you get 1

if you take the fifth root of -1 you get -1 
if you square that -1 you get 1
But some calculators come up with some weird numbers
Different calculators give different results.