Imaginary Numbers Practice

Simplify:

3 + 2i + 4i + 6

• 9 + 6i

• 7i + 8

• 9 + 6i²

• 9 - 6i

Simplify:

4 + 7i - 3 - 2i

• 1 + 5i

• 7 + 9i

• 1 + 9i

• -1 + 5i

Simplify:
-3i(4 + 2i)

• 6 - 12i

• 6 + 12i

• -12i - 6i²

• -12i + 6i²

Simplify:
(2 - 3i)(5 + 4i)

• 22 - 7i

• 22 + 7i

• 22 - 7i²

• 22 + 7i²

What letter usually represent imaginary number?

• a

• i

• j

• x

• e

Answer explanation

• 10
• -10
• 10i
• -10i

What is the value of x if x = 10?

• 10

• -10

• 10i

• -10i

• 2-3i

• 2+3= 5

• 2+3i

• 2 - 3= -1

What is the value of i²?

• -1

• 1

• i

• -i

• 7

• -7

• 7i

• -7i