Question

Helpppppppppppppppppppppppp

Answer 1

For this case what you should do is rewrite the function.
We then have to rewrite:
root (-80)
root (- (16 * 5))
4raiz (-5)
Then remember that:
Root (-1) = i
We have then:
4raiz (5) i
Answer:
The equivalent expression is:
4raiz (5) i
(option 3)

Answer 2

`√(-80) \\`
We can write it as:

`√(-1) * √(80)`
Apply imaginary number rule:

`√(-1) =i`
We get

`=√(80) i`
Now factorise 80.
80=4 x 4 x 5 = 4² x 5

`√(80)i = √(4^2 * 5) i`

`=√(4^2) * √(5) i \\ =4 √(5) i`

`Answer: \ 4 √(5) i`