Complex numbers

Simplify:
-3i(4 + 2i)

• 6 - 12i
• 6 + 12i
• -12i - 6i²
• -12i + 6i²

Tags

CCSS.HSA.APR.A.1

Simplify:
(3 + 2i) + (4i + 6)

• 9 + 6i
• 7i + 8
• 9 + 6i²
• 9 - 6i

Tags

CCSS.HSN.CN.A.2

What does i² = ?

• -1
• √-1
• 1
• -√1

Tags

CCSS.HSN.CN.A.1

Simplify
2i - 7i + 10

• -5i+10
• 5i
• 9i+10
• 5i+10

Tags

CCSS.HSN.CN.A.2

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

• -2+6i
• 12+6i
• -35-16i²
• -35 -16i

Tags

CCSS.HSN.CN.A.2

Multiply
(2i)(3i)

• 5i
• -5
• 6i
• -6

Tags

CCSS.HSN.CN.A.2

4+5i+6+6i

• 21i

• 20i+36

• 24+30i

• 10+11i

Tags

CCSS.HSN.CN.A.2

3i + 2i

• 5i
• 5i²
• 6i
• -5

Tags

CCSS.HSN.CN.A.2

-6i+3i

• 3i
• -3i
• -2i
• -3i²

Tags

CCSS.HSN.CN.A.2

Simplify: (8 + 2i) + ( -2 - 3i)

• 10 - i

• 10 + 5i

• 6 + 5i

• 6 - i