The roots of the equation \[{{x}^{4}}-1=0\], are [MP PET 1986]

1.	The roots of the equation \[{{x}^{4}}-1=0\], are [MP PET 1986]
A.	\[1,\,1,i,-i\]
B.	\[1,\,-1,i,-i\]
C.	\[1,-1,\omega ,{{\omega }^{2}}\]
D.	None of these
Answer» C. \[1,-1,\omega ,{{\omega }^{2}}\]

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The roots of the equation \[{{x}^{4}}-1=0\], are [MP PET 1986]

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