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Simplify the number using the imaginary unit i:

(square root) -28

options:
a. 2(square root) -7
b. -2(square root) -7
c. i(square root) 28
d. 2i(square root) 28

Respuesta :

HomertheGenius
We have to simplify:
√ ( - 28 )
We know that √ (-1 ) = i ( the imaginary unit )
√ ( - 28 ) = √ 28 * ( - 1 ) = i √ ( 28 ) = i √ ( 4 * 7 ) = 2 i √( 7 )
But there is not such solution among the options.
Only correct answer ( using the imaginary unit ) is:
C. i (square root) 28
 

StarSet

Answer:

CONNEXUS: Lesson 7 Unit 5 Complex Numbers ANSWERSS!

Step-by-step explanation:

Just took the quiz and i have all the answers so here you go  

1) D: 2i(square root)7

2)B:second graph (4,2)

3)B:11-2i

4)C: 20-4i

5)A:31+i/26

6)C: 1(plus or minus) i(square root)11

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