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The task is to determine the real part of the complex number \( z = 4 - i \).

In a complex number of the form \( z = a + bi \), where \( a \) is the real part and \( b \) is the imaginary part, the real part is simply the value of \( a \).

For \( z = 4 - i \):
- The real part is \( 4 \).

**Answer:** 4

Would you like further details or have any questions?

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Here are some related questions to expand on this topic:

1. What is the imaginary part of \( z = 4 - i \)?
2. How do you find the modulus (absolute value) of a complex number?
3. What is the conjugate of the complex number \( z = 4 - i \)?
4. How would you represent \( z = 4 - i \) in polar form?
5. Can you explain the difference between real and imaginary parts of a complex number?

**Tip:** In complex numbers, the real part is always independent of \( i \), while the imaginary part is the coefficient of \( i \).

Odrediti realni deo kompleksnog broja z = 4 - i.

Determine the real part of the complex number z = 4 - i. This solution explains the basic structure of complex numbers, including the distinction between real and imaginary parts, suitable for high school students in Grades 9-12.

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