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Andreyy89
3 years ago
12

PLEASE HELP I NEEED HELP ASAP

Mathematics
1 answer:
dolphi86 [110]3 years ago
6 0

Answer:

B

Step-by-step explanation:

Using the rule of radicals

\sqrt{a} × \sqrt{b} ⇔ \sqrt{ab} and

\sqrt{-1} = i

Given

\sqrt{-80}

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

= \sqrt{16} × \sqrt{5} × \sqrt{-1}

= 4 × \sqrt{5} × i

= 4i\sqrt{5} → B

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