Question

Add the complex expressions, and simplify (9 + 9.4i) + (-8.6 – 4i)

Answer 1

Add real part with real part and imaginary part with imaginary part.

Answer 2

Are you able to distinguish between real part and imaginary part?

Answer 3

expand first, 9 + 9.4i -8.6 - 4i

then simplify

9.4i - 4i + 9 - 8.6
5.4i + 0.4

Answer 4

=9-8.6+9.4i-4i
=0.4+5.4i

Answer 5

I am confused...what is real and imaginary? are the ones with the i imaginary?

Answer 6

Complex numbers are i and real numbers are... well in simple terms, the regular numbers with no i. Where \[i=\sqrt{-1}, i^2=-1, i^3=-i, i^4=1\]

Answer 7

Ok I got it, thank you! Would you be able to help me with one more?