Question

Question about complex numbers...

Answer 1

(1-2i)-4i

Answer 2

how do i do this?

Answer 3

@jim_thompson5910 could you help me on a complex problem question?

Answer 4

Real parts and imaginary parts can be treated separately. That is to say,
\[(a+bi)+(c+di)=\underbrace{(a+c)}_{\text{real parts}}+\underbrace{(c+d)}_{\text{imaginary parts}}i\]
This means
\[(1-2i)-4i=1+(-2-4)i=1-6i\]

Answer 5

ohhhhhhhhhh i see now thanks you