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Mathematics 19 Online
OpenStudy (omgthatgirl):

Help Simplify the imaginary number square root -45

Nnesha (nnesha):

|dw:1426552333343:dw| factor it

OpenStudy (anonymous):

Can you find the square root of 45 first?

OpenStudy (anonymous):

its about 7

OpenStudy (anonymous):

wait... there is like, no such thing as -45 as a square root..

OpenStudy (anonymous):

There is! Stay and find out :)

Nnesha (nnesha):

remember \[\huge\rm i = \sqrt{-1}\] find factor of 45 one of number suppose to be perfect square root

OpenStudy (anonymous):

O.o ok

OpenStudy (anonymous):

its an imaginary

OpenStudy (anonymous):

you could google this

OpenStudy (omgthatgirl):

8 and 5 equal 45

OpenStudy (omgthatgirl):

9 and 5 sorry

Nnesha (nnesha):

yes that one^

OpenStudy (omgthatgirl):

so would it be it be 9+5i?

Nnesha (nnesha):

|dw:1426552843925:dw| now just take square root of 9 and sqrt{-1} = i

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