Question

ПОЖАЛУЙСТА! СРОЧНО ! хотя бы а) и б)

Answer 1

А)7+4i
Б)-3-2i
В)10+3i^2
Е)5i+12

Answer 2

а) K+L = 5+3i+2+i = 7+4i
б) L-K = 2+i-(5+3i) = -3-2i
в) K·L = (5+3i)(2+i) = 10+5i+6i+3i² = 10+11i-3 = 7+11i
г) K/L - (5+3i)/(2+i) = (5+3i)(2-i)/[(2+i)(2-i)] = (10-5i+6i+3)/(4+1) = (13+i)/5
д) M/L-K·N = (5i)/(2+i)-(5+3i)·12 = (5i)(2-i)/[(2+i)(2-i)]-60-36i =
(5+10i)/(4+1)-60-36i = 5(1+2i)/5-60-36i = 1+2i-60-36i = -59-34i
е) M+N = 5i+12 = 12+5i