B, D, A
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Answer:
The correct answer is the last option.
Step-by-step explanation:
When you have a fraction with complex numbers, the first step to simplify is to multiply up and down the conjugate of the denominator, this will eliminate the complex part of the denominator, and in this way you can separate the expression in its real and complex part.
For the expression:

The denominator conjugate is 4 + 2i
When multiplied, the denominator is:

Answer:
what is the question then
Step-by-step explanation:
Answer:
65
Step-by-step explanation:
the sequence is decreasing by 8
Answer:
0.5
Step-by-step explanation: