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26-10-2021
Mathematics

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Express √ − 25 as a complex number: √ − 25 =

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lor067ewp lor067ewp

26-10-2021

Answer:

5i

Step-by-step explanation:

i² = -1

[tex]\sqrt{-25}[/tex] = [tex]\sqrt{i^{2} 25 }[/tex]

= [tex]\sqrt{i^{2} }[/tex] ·[tex]\sqrt{25}[/tex]

= i · 5

= 5i

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