Question

Write the expression (3 − 9i) + (4 + 5i) as a complex number in standard form.

Answer 1

3 - 9i
4 +5i
-------
7 - 4i

Answer 2

4-7i

Answer 3

Is that theway you were told to do it?

Answer 4

3-9i+4+5i=7-4i
modulus=A=\[\sqrt{65}\]
amrgument=t=arctan(-4/7)=pi-arctan(4/7)
Z=A*exp(it)

Answer 5

If you want it in polar form use vamgadu procedure.