Describe the Error $\sqrt { - 8 } \sqrt { - 8 } = \sqrt { ( - 8 ) ( - 8 ) } = \sqrt { 64 } = 8$

question 30

Multiple Choice

Describe the error.​ $\sqrt { - 8 } \sqrt { - 8 } = \sqrt { ( - 8 ) ( - 8 ) } = \sqrt { 64 } = 8$ ​

• A)​ \(\sqrt { - 8 } \sqrt { - 8 } = \sqrt { 8 } i \sqrt { 8 } i = 8 i = - 8 i\)
• B)​ \(\sqrt { - 8 } \sqrt { - 8 } = \sqrt { 8 } i \sqrt { 8 } i = - 64\)
• C)​ \(\sqrt { - 8 } \sqrt { - 8 } = \sqrt { 8 } i \sqrt { 8 } i = 8 i\)
• D)​ \(\sqrt { - 8 } \sqrt { - 8 } = \sqrt { 8 } i \sqrt { 8 } i = 8 i ^ { 2 } = - 8\)
• E)​ \(\sqrt { - 8 } \sqrt { - 8 } = \sqrt { 8 } i \sqrt { 8 } i = 8 i ^ { 2 } = 8\)

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Definitions:

Opportunity Cost

The cost of foregone alternatives, representing the benefits an individual, investor, or business misses out on when choosing one alternative over another.

Interest Rate

is the cost of borrowing money or the return on investment, expressed as a percentage of the principal, over a specified period.