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Mathematics, 02.03.2021 21:30 christib

Which of the following is a non-real complex number? A \frac{5 - 2 \sqrt{7} }{4?}
B.
c.
d.


- 8    \sqrt{ \frac{1}{6} }  -  \frac{3}{\sqrt{2} }
9 -  \frac{1}{\sqrt{17} }
3 \sqrt{ \frac{7}{5} }  +  \sqrt{ -  \frac{9}{5} }

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Which of the following is a non-real complex number? A
B.

c.

d.
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