A2_3.2.1_Complex Numbers

What is the format used to write complex numbers?

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CCSS.HSN.CN.A.1

• 1

• -1

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CCSS.HSN.CN.A.2

What happens to the imaginary part when multiplying complex conjugates?

• It remains the same

• It becomes negative

• It becomes zero

  (cancels out)

• It doubles

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CCSS.HSN.CN.C.8

Simplify. (7 - 11i) + (5 - 2i) = _______

• 12 - 13i

• 2 - 9i

• -12 + 13i

• 12 + 13i

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CCSS.HSN.CN.A.2

Simplify. (-3 + 9i) - (2 - i) = _______

• -5 + 10i

• -1 + 8i

• -5 + 8i

• -1 + 10i

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CCSS.HSN.CN.A.2

Simplify. (-3 + 8i) - (1 + 9i) = _______

• -4 - i

• -2 + 17i

• -2 - 17i

• 4 + i

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CCSS.HSN.CN.A.2

Simplify. (-2 - i) + (3 + 4i) = _______

• 1 + 3i

• -5 + 5i

• -1 - 3i

• 5 + i

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CCSS.HSN.CN.A.2

Simplify. -9i(-7 - 2i) = _______

• -18 + 63i

• 18 - 63i

• -63 + 18i

• 63 - 18i

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CCSS.HSN.CN.A.2

• 15 + 8i

• 16 + 2i

• 8 + 15i

• 15 - 8i

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CCSS.HSN.CN.C.8

Simplify. (-1 - 2i)(4 + 3i) = _______

• 2 - 11i

• -2 + 11i

• -2 - 11i

• 2 + 11i

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CCSS.HSN.CN.C.8