IMPOWER function
    IMPOWER(Number,
    Exponent) IMPOWER(Number;
    Exponent)
  
  Number
        Text or { Text }
      
      A complex number.
Exponent
        Number or { Number }
      
      The exponent to raise the complex number to.
Returns
        Text or { Text }
      
      The given complex number raised to the given exponent.
Raises a complex number to an exponent and returns the result.
Example
      IMPOWER("1+2i",
      2)IMPOWER("1+2i";
      2)
      
    
    Returns a value roughly equivalent to "-3+4i".