when i put the square root of -64 it said that it was equal to 8i what is that? i feel stupid asking this question but oh well haha thanks

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Guest Jan 6, 2015

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Best Answer

"i' is an "imaginary" number......it has the property that i^2 = -1 or, to put it another way, i =√-1

So we have

√(-64) = √[(-1)(64)] = √(-1)*√64 = i*8 or just 8*i = 8i

Does that make sense??

CPhill Jan 6, 2015

CPhill · Answer 1 · 2015-01-06T09:53:42

"i' is an "imaginary" number......it has the property that i^2 = -1 or, to put it another way, i =√-1

So we have

√(-64) = √[(-1)(64)] = √(-1)*√64 = i*8 or just 8*i = 8i

Does that make sense??