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Mathematics 11 Online
OpenStudy (anonymous):

Simplify.

OpenStudy (anonymous):

\[\LARGE \sqrt{-121}\]

OpenStudy (anonymous):

\(\large \sqrt{-121}=\sqrt{-1\cdot 121}=\sqrt{-1}\cdot \sqrt{121} \) simplify that....

OpenStudy (anonymous):

A) -11i B) 11i C) -11 D) 11

OpenStudy (anonymous):

choose...

OpenStudy (anonymous):

I don't know how to simplify it, can you help me?

OpenStudy (anonymous):

yes... i can help. do you know what the square root of -1 is??? it's a definition... your book should tell you what it is..

OpenStudy (anonymous):

i don't have a book.

OpenStudy (anonymous):

definition: \(\large i=\sqrt{-1} \) can you at least figure out what the square root of 121 is?

OpenStudy (anonymous):

11

OpenStudy (anonymous):

So is it D?

OpenStudy (anonymous):

\[\sqrt{-121}=\sqrt{121}\sqrt{-1}=11i\]

OpenStudy (anonymous):

Thank you.

OpenStudy (anonymous):

Welcome ^^

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