Problem 56 of 7
Classify number -5+i as real, imaginary, or complex.
Hints
Using a hint is okay. It just tells the trainer to give you a little more review.
Hidden until you reveal it.
understand subset relationships.
Hidden until you reveal it.
Number must fit within the complex number system.
Enter your answer
No answer yet
Correct
Your answer is equivalent to the expected form.
Solution
Walkthrough
Walkthrough shown
Full solution stays hidden until you ask for it.
1. Simplify the number if needed.
2. Identify whether the imaginary coefficient is zero, real part is zero, or both are present.
3. Classify within the complex number system.
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
Saying only a+bi with both parts nonzero is complex.