Equations with Real and Imaginary Numbers

Simplify.

• -5i

• 5

• 5i

• -5

√(-300)

• 10i√3

• 15√15

• -10√3

• 2i√13

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

• 10
• -10
• 10i
• -10i

• -5i
• 5
• 5i
• -5

• i

• -1

• 1

• -i

What is the value of x?

• 10

• -10

• 10i

• -10i

• 10
• -10
• 10i
• -10i

• 7

• -7

• 7i

• -7i