Question

( - 4 + 3 i ) + (- 3 + i )

Answer 1

fazendo a distributiva:
-4*-3 + -4*i + 3i*-3 + 3i^2
12-4i-9i+3i^2
12-13i+3i^2


3i^2-13i+12

Delta=169-4*3*12
Delta=169-144
Delta=25

x'=13+5/6
x'=18/6
x'=3

x"=13-5/6
x"=8/6
simplificando
x"=4/3