TEST on IXL TOPICS WEEK ONE

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

• 9 + 6i
• 7i + 8
• 9 + 6i²
• 9 - 6i

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CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

Simplify:
(4 + 7i) - (3 + 2i)

• 1 + 5i
• 7 + 9i
• 1 + 9i
• -1 + 5i

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CCSS.HSN.CN.A.2

Simplify:
-3i(4 + 2i)

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

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CCSS.HSN.CN.A.1

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

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CCSS.HSN.CN.A.3

Simplify
(-6 - 2i)²

• 32
• 36-4i
• 36+24i
• 32+24i

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CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

What does i² = ?

• -1
• √-1
• 1
• -√1

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CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

Simplify
2i - 7i + 10

• -5i+10
• 5i
• 9i+10
• 5i+10

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CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

Simplify -4√-63

• 3i√7
• -12i√7
• -12√7
• 36√7

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CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

CCSS.HSN.RN.A.2

√-36

• 6
• -6
• -6i
• 6i

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CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

A complex number can be expressed as a + bi. What does a represent?

• the real part of the complex number

• the imaginary part of the complex number

• depends on the sign of the number

• the square root of the complex number

Tags

CCSS.HSN.CN.A.1