Question 1083288
{{{ (1-3i)^2  = (1-3i)(1-3i) = 1-3i-3i+9i^2 = highlight(-8-6i ) }}} 

= {{{10e^(i*216.8699^o) }}}  <<<— exponent in degrees
= {{{10e^(i*1.204832(pi)) }}}  <<<— exponent in radians