Question

Express in terms of i. 4sqrt-225

Answer 1

\[4\sqrt{-225}\]

Answer 2

how is this done

Answer 3

okay, here's how to deal with square root of negative numbers
\[\sqrt{-b}=i \sqrt{b}\]

Answer 4

okay

Answer 5

try it on your expression

Answer 6

the sqrt of -225 is 15

Answer 7

15 and ?

Answer 8

15

Answer 9

and 5

Answer 10

sqrt[225]=15

what's

sqrt[-225]= ?

look at my example above

Answer 11

you are one of the few that actually help the person understand the problem

Answer 12

okay so would it be sqrt-225 and 4 ?

Answer 13

4 sqrt and 15 right

Answer 14

\[\sqrt{-b}=i \sqrt{b}\]

\[\sqrt{-225}=i\sqrt{225}=15i\]

Answer 15

okay now I have the understanding of it I was trying to think of what you was saying my bad

Answer 16

Here's more elaboration of what I did

\[\sqrt{-1}=i\]

\[\sqrt{-225}=\sqrt{225}*\sqrt{-1}=\sqrt{225}i=15i\]

Answer 17

okay now it looks more readable

Answer 18

now you can multiply by 4

Answer 19

15i*4=60i right?

Answer 20

yes

Answer 21

okay thank you for the help so much

Answer 22

no problem