Can you find the cube root of negative numbers, like the cube root of -64? Explain why or why not.

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03-02-2017
Mathematics

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Can you find the cube root of negative numbers, like the cube root of -64? Explain why or why not.

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apologiabiology apologiabiology · Answer 1 · 2017-02-09T07:51:15+01:00

apologiabiology apologiabiology

09-02-2017

yes

remember that an odd power of a negative is negative
(-1)(-1)(-1)=(-1) tiat is negative
alsoo remember that ∛(ab)=(∛a)(∛b)

so
∛(-64)=(∛-1)(∛64)=(-1)(4)=-4

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