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Mathematics 19 Online
OpenStudy (anonymous):

how do you find the real cube roots of -64?

OpenStudy (anonymous):

you cant , its a complex number if your going for root of it

OpenStudy (anonymous):

i think it will be 8 i

OpenStudy (anonymous):

nope

OpenStudy (anonymous):

4i

OpenStudy (anonymous):

4*4*4=64 but still thats a complex number

OpenStudy (anonymous):

yes, i was thinking sqaure for some reason. 4i

OpenStudy (anonymous):

thank you!!

OpenStudy (anonymous):

but that's an imaginary number not a "real" root

OpenStudy (anonymous):

;)

OpenStudy (anonymous):

what about -27/216??

OpenStudy (anonymous):

4 is cube root of 64 and since its -64 so its an imaginary number i never said its real

OpenStudy (anonymous):

n @jessica824 you can find it

OpenStudy (anonymous):

i dont know how

OpenStudy (anonymous):

no, i wasn't saying you said anything. I was responding the the original question from the original poster where the person asked about a "real" root.

zepdrix (zepdrix):

@itsmylife -4 should be the cube root of -64.\[\large (-4)(-4)(-4)=-64\] I'm not sure why you're thinking it would be complex, did you confuse it with the square root? :o\[\large (4i)(4i)(4i)=-64i\]

OpenStudy (anonymous):

aha my honest mistake thanks for correcting me @zepdrix

zepdrix (zepdrix):

Happens to all of us c: those darn brain farts! heh

OpenStudy (anonymous):

lol :P

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