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11-10-2018
Mathematics

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Which of the following is the correct notation for the complex number √-64-12 ?

8i + 12

−12 + 8i

8i − 12

12 − 8i

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13-10-2018

Answer:

8i - 12

Step-by-step explanation:

√-64 - 12

Remember that a unit complex (i) = √-1

So √-64 can be written as √64 × √-1 and it gives 8 × i = 8i

The answer for √-64 - 12 is therefore 8i - 12

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