3 years ago

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

1 answer:

3 0

Answer:

± 4i $\sqrt{5}$

Step-by-step explanation:

$\sqrt{-80}$ = $\sqrt{16(5)(-1)}$

= $\sqrt{16}$ × $\sqrt{5}$ × $\sqrt{-1}$

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

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