Question 479776
  <pre><font face = "Tohoma" size = 4 color = "indigo"><b> 
Hi,
{{{2a^(-4)/5b^(-2)= 2*a^(-4)a^4b^2/(5*b^(-2)b^2a^4) = 2b^2/5a^4}}}

{{{a^0 = 1}}}
{{{(a^p)^q = a^(p*q)}}}
{{{root(a,p)*root(a,q) = root(a,p*q)}}}
{{{x^m/x^n=x^(m-n)}}}
{{{( x^m )( x^n ) = x^( m + n )}}}  *****