Question

вычислить (5-5i)^2*(1+3i)^3

Answer 1

$(5-5i)^2*(1+3i)^3=(25-50i+(5i)^2)(1+3*3i+3*(3i)^2+(3i)^3)=$
$=(25-50i-25)(1+9i-27-27i)=-50i(-26-18i)=1300+900i$