4.6 Imaginary and Complex Numbers Practice

What does i² = ?

• -1
• √-1
• 1
• -√1

Tags

CCSS.HSN.CN.A.1

Simplify √-4

• 2i
• -2i
• 2
• 4i

Simplify √-23

• -√23
• 23i
• 23
• i√23

Simplify -√-48

• 4i√3
• -4i√3
• i√48
• -48i

Solve.

x² + 36 = 0

• x = ±6

• x = 6i

• x = -6

• x = ±6i

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

Solve.

33 = 18 - 3x²

• x = ±5i

• x = ±i√5

• x = ±√5

• x = i√5

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

(5-2i) + (-7+8i)

• -2+6i
• 12+6i
• -35-16i²
• -35 -16i

Tags

CCSS.HSN.CN.A.2

(10-6i) - (2+3i)

• 12 + 3i
• 8 - 3i
• 8 - 9i
• -9i + 8

Tags

CCSS.HSN.CN.A.2

3i(-2 + 4i)

• -6+12i
• -12-6i
• -2+7i
• 12+6i

Tags

CCSS.HSN.CN.A.2

(1-3i)(2+5i)

• 22-i
• 16-i
• 17-i

Tags

CCSS.HSN.CN.A.2