Question 322230
Use the FOIL Method,
{{{(-4-8i)(3+i) =-4(3)+(-4)i+(-8i)(3)+(-8i)(i)}}}
{{{(-4-8i)(3+i)=-12-4i-24i-8i^2}}}
{{{(-4-8i)(3+i)=-12-28i+8}}}
{{{(-4-8i)(3+i)=-4-28i}}}