Complex Numbers FOIL

Simplify: 
(7 + 2i)(9 - 6i)

• 75-24i

• 63 - 24i  - 12i²

• 51 - 24i

• 58 + 60i

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CCSS.HSN.CN.A.2

Express the product of the pair of complex numbers in  a+bi  form.
4 – 3i  and   -7 – 2i

•   -23 + 13i

•   -23 - 29i

•   -34 + 13i

•   -34 - 29i

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CCSS.HSN.CN.A.2

(1-3i)(2+5i)

• 22-i

• 16-i

• 17-i

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CCSS.HSN.CN.A.2

(4+6i)(a+5i)= -18+ 38i
Therefore a=

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CCSS.HSN.CN.A.2

Lisa wants to buy two new dresses from the mall. If one dress costs (59 - 6i) and the other costs (34 + 17i), how much money will she need to bring to the mall?

• 82 dollars

• 93 + 11i dollars

• 93 - 23i dollars

• 25 - 23i dollars

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CCSS.HSN.CN.A.2

Perform operation.​ ​ ​ ​ (a)  

• D

• A

• B

• C

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CCSS.HSN.CN.A.2

Mathematical Equivalence

OFF

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CCSS.HSN.CN.C.8

Perform operation.​ ​ ​ ​​ (a)  

• C

• A

• B

• D

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CCSS.HSN.CN.A.2

Set of numbers containing imaginary and real numbers

• Imaginary Numbers

• Complex Numbers

• Complex Conjugates

• Pure Imaginary Numbers

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CCSS.HSN.CN.A.1

Simplify the following expression:

(28-11i)-(-11+12i)

• 17+i

• -39+i

• 39+i

• 39-23i

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CCSS.HSN.CN.A.2