Question

PLEASE HELP I NEEED HELP ASAP

Answer 1

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