Pre-Calculus - How to Math - Subtracting complex numbers (13 - 7i) - (2 - 5i)

The video tutorial explains how to subtract complex numbers by converting subtraction into addition. It covers the format of complex numbers, the process of distributing the negative sign, and combining real and imaginary parts to achieve the final result.

What is the standard form of a complex number?

• a / bi

• a * bi

• a - bi

• a + bi

How can you change a subtraction problem involving complex numbers?

• By dividing both numbers

• By converting it into an addition problem

• By ignoring the imaginary part

• By multiplying both numbers

What should you do with the negative sign when subtracting complex numbers?

• Distribute it to both the real and imaginary parts

• Add it to the real part only

• Add it to the imaginary part only

• Ignore it

In the example provided, what is the result of combining the real parts 13 and -2?

• 12

• 15

• 11

• 10

What is the final imaginary part in the example after combining -7i and 2i?

• 5i

• -2i

• -9i

• -5i