Question

Find the value of: (-1)+(-1)^2n+(-1)^2n+1+(-1)^4n+1​

Answer 1

Answer:

-2

Step-by-step explanation:

Let x=(−1) n+(−1) 2n+(−1) 2n+1 +(−1) 4n+1

where n is odd.

(−1) n=−1

(−1) 2n =1

(−1) 2n+1 =(−1) 2n .(−1)=−1

(−1) 4n+1 =(−1) 4n (−1)=−1

∴x=−1+1−1−1=−2

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