joejoefofana joejoefofana

31-01-2019
Mathematics

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How to express the radical using the imaginary unit , i. Please help

How to express the radical using the imaginary unit i Please help class=

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jimrgrant1 jimrgrant1

31-01-2019

Answer:

± 4i[tex]\sqrt{5}[/tex]

Step-by-step explanation:

[tex]\sqrt{-80}[/tex] = [tex]\sqrt{16(5)(-1)}[/tex]

= [tex]\sqrt{16}[/tex] × [tex]\sqrt{5}[/tex] ×[tex]\sqrt{-1}[/tex]

= 4[tex]\sqrt{5}[/tex]i → [ [tex]\sqrt{-1}[/tex] = i ]

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