title: Need a superscript for x raise to b
body: <p>I need a superscript for displaying x raise to b.</p>
  
  <p>I was able to display x raise to 2 (i.e. x square),
  also x raise to 3 (i.e. x cube)..</p>
  
  <p>But now I need to display x raise to b using superscript..</p>
  
  <p>Please help..</p>