5.9 Complex Numbers

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

• -2+6i
• 12+6i
• -35-16i²
• -35 -16i

Tags

CCSS.HSN.CN.A.2

√-4

• -2

• -2i

• 2

• 2i

Tags

CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

What does i² = ?

• -1
• √-1
• 1
• -√1

Tags

CCSS.HSN.CN.A.1

(2i)(3i)

• 5i
• -5
• 6i
• -6

Tags

CCSS.HSN.CN.C.8

(-3-i)(6-i)

• -21-7i
• -19-3i
• -15-5i
• -17-9i

Tags

CCSS.HSN.CN.A.2

Simplify:
-3i(4 + 2i)

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

Tags

CCSS.HSN.CN.A.2

What is the complex conjugate of  4-3i?

• A.  1/(4-3i)
• B. 1/(4+3i)
• C.  -4 + 3i
• D.  4 + 3i

Tags

CCSS.HSN.CN.A.3