Adding, Subtracting, Multiplying Complex Numbers

Another way to express √-1 is?

• 1

• -1

• i

• 0

A complex number can be expressed as a + bi. What does a represent?

• the real part of the complex number

• the imaginary part of the complex number

• depends on the sign of the number

• the square root of the complex number

The complex conjugate of 4 + 3i is

• 3 + 4i

• 3 - 4i

• 4 - 3i

• 4 + 3i

The complex conjugate can be found by...

• Changing the sign of both a and b

• Changing the sign of a

• Changing the sign of b

• Switching the a and b values

• A

• B

• C

• D

• A
• B
• C
• D

• A
• B
• C
• D

Choose the correct answer for the operation pictured.

• 7-13i

• 7-i

• 1-13i

• 1-i

• A
• B
• C
• D

Find the sum.
(5-2i) + (-7+8i)

• -2+6i

• 12+6i

• -35-16i²

• -35 -16i