The roots of the equation are ∣ x C...

The roots of the equation are ∣ x C r x+1 C r x+2 C r n−1 C r n C r n+1 C r n−1 C r−1 n C r−1 n+1 C r−1 ∣ =0 are a. x=n, b. x=n+1, c. x=n-1, d. x=n-2.

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