Complex Numbers

What does i² = ?

• -1
• √-1
• 1
• -√1

Tags

CCSS.HSN.CN.A.1

Simplify 
√-25

• -5i
• 5
• 5i
• -5

Tags

CCSS.HSN.CN.A.2

CCSS.HSN.CN.A.1

Simplify:
√-108

• 3i√6
• 3i√20
• 6i√3
• 20i√3

Tags

CCSS.HSN.CN.A.2

CCSS.HSN.CN.A.1

CCSS.HSN.RN.A.2

Simplify
2i - 7i + 10

• -5i+10
• 5i
• 9i+10
• 5i+10

Tags

CCSS.HSN.CN.A.2

Simplify
3i - (4 + 7i)

• -4 + 10i
• 21 - 12i
• 4 - 10i
• -4 - 4i

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

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

• -6+12i
• -12-6i
• -2+7i
• 12+6i

Tags

CCSS.HSA.APR.A.1

i⁷

• i
• -i
• 1
• -1

Tags

CCSS.HSN.CN.A.2

i⁶⁶

• 1
• i
• -1
• -i

Tags

CCSS.HSN.CN.A.2