Operations on complex numbers

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CCSS.HSN.CN.C.8

• A

• B

• C

• D

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CCSS.HSN.CN.C.8

In the binomial multiplication example (3 + 4i) (5 + 2i), the last terms would be _____ and______.

• 3 and 4i

• 5 and 2i

• 3 and 5

• 4i and 2i

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CCSS.HSN.CN.C.8

The expression (2 + 3i)² is equal to

• -5

• -5 + 12i

• 4 + 21i

• 13 + 12i

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CCSS.HSN.CN.C.8

 Simplify $\left(2+7i\right)\left(2-7i\right)$  

•  $53$  

• .

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CCSS.HSN.CN.C.8

Write the expression in the form of a+bi, where a and b are real numbers.

-3i ⋅ 2i

• -6

• 6

• -6i

• 6i

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CCSS.HSN.CN.C.8

Expand into standard form

(x+2i)(x-2i)

• x²-4

• x²+4

• x+2i²

• x²+2i²

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CCSS.HSN.CN.C.8

Multiply the complex conjugates (4 - 3i)(4 + 3i)=

• 7

• 14

• 25

• 2

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CCSS.HSN.CN.C.8

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CCSS.HSN.CN.C.8

Simplify the following expression:

(-2+6i)(2-6i)

• 32+24i

• -32+24i

• -32+24i

• 40

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CCSS.HSN.CN.C.8