Answer:
3 + 9i
Step-by-step explanation:
(4 + 2i) - (1 - 7i)
distribute the (-)
(4 + 2i) - 1 + 7i
combine like terms
148 degrees!
They are 180 degrees together so just subtract 32. 180- 32 = 148.
It can't be simplified.
Combine the opposite terms in r − 3 − r .
