Question

please can you be of my help
$x = 10 + \sqrt{ \frac{ - 80}{2} }$
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Answer 1

Step-by-step explanation:

$x = 10 + \sqrt{ \frac{ - 80}{2} } \\ = 10 + \sqrt{ - 40} \\ = 10 + \sqrt{ - 2 \times 2 \times 2 \times 5} \\ = 10 + 2 \sqrt{ -10} \\ = 10 + 2 \sqrt{10} \times \sqrt{ - 1} \\ since \: ,i (iota)= \sqrt{ - 1} \\ = 10+ 2\sqrt{10} i \\ real\:value=10 \\ imaginary \: value=2 \sqrt{10} i$

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