1.6-1.8 Review

Simplify √-4

• -2

• -2i

• 2

• 2i

Write the complex number in standard form (5-2i) + (-7+8i)

• -2+6i

• 12+6i

• -35-16i²

• -35 -16i

What does i² = ?

• -1
• √-1
• 1
• -√1

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CCSS.HSN.CN.A.1

• A
• B
• C
• D

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CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

 $\left(-3-i\right)\left(6-i\right)$  Multiply 

• -21-7i

• -19-3i

• -15-5i

• -17-9i

Simplify:  $-3i\left(4+2i\right)$  

• 6 - 12i

• 6 + 12i

• -12i - 6i²

• -12i + 6i²

Simplify.

• -5i
• 5
• 5i
• -5

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CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

Multiply: 
(4 – 3i)(-7 – 2i)

• A.  -23 + 13i
• B.  -23 - 29i
• C.  -34 + 13i
• D.  -34 - 29i

Tags

CCSS.HSN.CN.A.2

How do you write a complex number in standard form?

• a-bi

• a+bi

• ai+b

• ai-b

What is the complex conjugate of $4-3i$ ? 

• A. 1/(4-3i)

• B. 1/(4+3i)

• C. -4 + 3i

• D. 4 + 3i