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ICE Princess25 [194]
3 years ago
8

Simplify the number using the imaginary unit i: (square root) -28

Mathematics
2 answers:
Oksana_A [137]3 years ago
8 0

Answer:

C


Step-by-step explanation:

<em>Imaginary Number  i is defined as the square root of -1</em>

<em>We can write:  i=\sqrt{-1}</em>


Now, we want to simplify  \sqrt{-28}

<em>We can use the formula \sqrt{(a)(b)} =\sqrt{a} \sqrt{b} to simplify it further:</em>

\sqrt{-28} \\=\sqrt{(-1)(28)} \\=\sqrt{-1} \sqrt{28}

<em>Using the fact that i=\sqrt{-1}  ,  we can write:</em>

i\sqrt{28}

This is answer choice C.



olasank [31]3 years ago
3 0
<span>(square root) -28
=</span><span>(square root) 4*-7
=2</span><span>(square root)-7
hope this helps</span>
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