Question 610143
  <pre><font face = "Tohoma" size = 3 color = "indigo"><b> 
Hi
{{{ (-33xy^-1 / 66x^0y^-3)^2=(-xy^2 /2)^2 = x^2y^4/4 }}}
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{{{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 )}}}