Find the value of (-1)+(-1)2n+(-1)2n+1+(-1)4n-1where n is postive odd integer

Find the value of (-1)+(-1)2n+(-1)2n+1+(-1)4n-1where n is postive odd

1.	Find the value of (-1)+(-1)2n+(-1)2n+1+(-1)4n-1where n is postive odd integer
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