Let's solve the expression step by step:

\[
(1 - i) - (-1 + 2i)
\]

1. First, distribute the negative sign to the second term:
\[
(1 - i) + (1 - 2i)
\]

2. Now, combine like terms (real parts and imaginary parts):
   - Real part: \( 1 + 1 = 2 \)
   - Imaginary part: \( -i - 2i = -3i \)

So the result is:

\[
2 - 3i
\]

Would you like further clarification or details about any of the steps?

Here are some related questions you might find interesting:

1. How do you add or subtract complex numbers?
2. What is the conjugate of a complex number, and how do you use it?
3. How do you multiply two complex numbers?
4. What is the modulus of a complex number, and how is it calculated?
5. Can you represent complex numbers on the complex plane? If so, how?

**Tip:** Always separate real and imaginary parts when performing operations with complex numbers to avoid confusion.

Learn how to subtract complex numbers with this step-by-step guide. This problem involves subtracting the complex number (1-i) from (-1+2i) and covers key concepts of complex numbers and their addition/subtraction. Suitable for students in Grades 9-11.

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