Review Operations with Imaginary Numbers

Why do we get imaginary numbers?

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CCSS.HSN.CN.A.1

Using your calculator, evaluate i¹³

• -1

• 1

• i

• -i

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CCSS.HSN.CN.A.2

Using your calculator, evaluate i^24

• -1

• 1

• i

• -i

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CCSS.HSN.CN.A.2

Using your calculator, evaluate i⁷

• -1

• 1

• i

• -i

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CCSS.HSN.CN.A.2

What is the value of x?

• 10

• -10

• 10i

• -10i

• 10
• -10
• 10i
• -10i

What is the value of x if x = 10?

• 10

• -10

• 10i

• -10i

Using your calculator, evaluate i²

• -1

• 1

• i

• -i

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CCSS.HSN.CN.A.1

What is the simplified form of (–9 + 5i) + (3 – 2i)

• –12 + 31i

• –6 + 3i

• –11 + 7i

• 5 – 3i

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CCSS.HSN.CN.A.2

What is the simplified form of (–3x + 2i)(x– 4i)

• –3x² + 6xi – 8

• –3x² + 6xi + 8

• –3x² + 14xi – 8

• –3x² + 14xi + 8

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CCSS.HSN.CN.C.8