anonymous
  • anonymous
What is ^2√(-125) ?
Mathematics
chestercat
  • chestercat
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anonymous
  • anonymous
\[\sqrt[2]{-125}\] It looks a little more like this XD
anonymous
  • anonymous
Are you allowed to use complex numbers?
anonymous
  • anonymous
Well i have to be able to write it in decimal form, but i don't know if it will be a decimal.

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anonymous
  • anonymous
you get me? XD
anonymous
  • anonymous
yes you can write it as $$ \sqrt {-125} = \a $$
perl
  • perl
\[ \sqrt {-125} = \sqrt{-1} \cdot \sqrt{125}= i ~ \sqrt{125} \]
anonymous
  • anonymous
i don't thunk I'm cetching on..
perl
  • perl
\[ \sqrt {-125} = \sqrt{-1} \cdot \sqrt{125}= i ~ \sqrt{125}\\ = i ~ 11.1803 \]
anonymous
  • anonymous
Yeah i think thats what the question wants XD
anonymous
  • anonymous
So the answer is 11.1803?
perl
  • perl
11.1803i , but it is an approximation
anonymous
  • anonymous
ok thankyou!
anonymous
  • anonymous
oh apperently it has to be a two digget number.. it could be like .12, 1.2, or 12 im not sure XD
perl
  • perl
can you take a screenshot of the question, I might have missed something
anonymous
  • anonymous
i cant, im using my computer. But the question just says "What is \[\sqrt[2]{-125}\] ?"
anonymous
  • anonymous
\[\sqrt[2]{-125}\] oops i guess it didnt go into equation form
perl
  • perl
the simplified exact solution is \[ \Large 5 \sqrt 5~ i \] the approximate solution is \( \large 11.2i \)
anonymous
  • anonymous
hm.. so should i just round and say the answer is 11?
perl
  • perl
The directions don't say to round though...
anonymous
  • anonymous
no all they ask is for the answer XD
perl
  • perl
the exact answer is preferable
anonymous
  • anonymous
yeah but i can only have two numbers.. heh i dont know XD im just going to put 11
anonymous
  • anonymous
do you mind helping me with 1 more?
perl
  • perl
ok

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