Categorizing Real and Complex Numbers

√-81

• 9i

• -9i

• -9

• 9

Find the product
(1+3i)(2-i)

• 5+5i

• 5-5i

• 2-3i

• 5+7i

Simplify: 
(10+ 15i) - (48 - 30i)

• 58 - 45i

• 58 - 15i

• -38 - 15i

• -38 + 45i

4+5i+6+6i

• 21i

• 20i+36

• 24+30i

• 10+11i

Simplify: 
(10+ 15i)-(48 - 30i)

• 58 - 45i

• 58 - 15i

• -38 - 15i

• -38 + 45i

Multiply
(3i)(-2+4i)

• -6+12i

• -12-6i

• -2+7i

• 12+6i

The expression (2 + 3i)² is equal to

• -5

• -5 + 12i

• 13

• 13 + 12i

(-5 + 10i)(-5 - 10i) = 125

• True

• False

(4-5i)(4+5i)

• 41

• -9

• 41+40i

• -9+40i

(-7+6i)²

• 49+36i

• 85

• 13-84i

• 13+84i