Question 785337
Use of binomial theorem might be easiest, instead of performing each multiplication step between binomials.


{{{(3+i)^3=3^3+3*3^2*i+3*3*i^2+i^3}}}
{{{3^3+27i-9+(-i)}}}
{{{27+26i-9}}}
{{{highlight(18+26i)}}}