Question:
Express (30 +1 9i)/(4+ 9i) in a form a + bi, where a and b are real numbers.
Answer:
3 - 2i
Step-by-step explanation:
The conjugate of 4+9i is 4-9i. Multiplying the numerator and denominator by 4-9i, we get
4.7m questions
6.0m answers