if -a^8 = 1 ,then find the value of a
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-a^8=1
=a=-1
=a=
![\sqrt[8]{ - 1}](https://tex.z-dn.net/?f=+%5Csqrt%5B8%5D%7B+-+1%7D+ "\sqrt[8]{ - 1}")
=a=-1
=a=
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