2-4i комплесные числа 7+3i

Question

2-4i комплесные числа 7+3i

Answer 1

(2-4i)/(7+3i)=(3-4i)(7-3i)(7+3i)(7-3i)=

(21-9i-28i+12i²)/(49-9i²)=(9-37i)/58




(i²=-1)