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Mathematics 17 Online
OpenStudy (iwanttogotostanford):

Please help with this question ASAP!!!

OpenStudy (iwanttogotostanford):

I am writing the equation now

OpenStudy (anonymous):

K I help U

OpenStudy (iwanttogotostanford):

i am supposed to simplify the expression

OpenStudy (anonymous):

ok one sec let me do math quick

OpenStudy (anonymous):

Do you know what the square root of -21 is?.. thats the first step...

OpenStudy (iwanttogotostanford):

4.58

OpenStudy (anonymous):

4.58257569 Yes you were very close

OpenStudy (iwanttogotostanford):

yes, so now what

OpenStudy (anonymous):

Do the left side of the equasion... 5 - 2*i=?

OpenStudy (iwanttogotostanford):

3i

OpenStudy (anonymous):

Good!

OpenStudy (anonymous):

1 - 3*i=?

OpenStudy (iwanttogotostanford):

-2i

OpenStudy (anonymous):

Yes!

OpenStudy (iwanttogotostanford):

this is AP Alg. 2 btw

OpenStudy (iwanttogotostanford):

so now what

OpenStudy (anonymous):

add 3*i + (-2*i)=?

OpenStudy (iwanttogotostanford):

1i

OpenStudy (anonymous):

Good!

OpenStudy (anonymous):

Now devide the square root of -21 by 1*i

OpenStudy (iwanttogotostanford):

I am not getting the right answer here, this is AP algebra 2.... and none of my answers match what we are getting here

OpenStudy (anonymous):

Hmmmmmm.....

OpenStudy (anonymous):

what are your answers?

OpenStudy (iwanttogotostanford):

ok here are th options

OpenStudy (anonymous):

Ohhhhh lol this is an easy one, its B. I forgot it was AP.

OpenStudy (iwanttogotostanford):

how'd you get that

OpenStudy (anonymous):

Easy... let me explain

OpenStudy (anonymous):

h\[\sqrt{-21} \sin \times \sqrt[3*i]{=-21} \times 1*i=30*1/61\]

OpenStudy (anonymous):

sorry about the random h there lol

OpenStudy (iwanttogotostanford):

ok, thank you! and you are positive this is right? I am studying for a test that is why i ask

OpenStudy (anonymous):

100% Sure

OpenStudy (anonymous):

Make sure to close question

OpenStudy (iwanttogotostanford):

thanks

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