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Evaluate the expression for k=−1k = -1.\newline11k11k

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Full solution

Q. Evaluate the expression for k=−1k = -1.\newline11k11k
  1. Substitute kk with −1-1: Substitute kk with −1-1 in the expression 11k11k. Replace kk with −1-1 in 11k11k to get 11(−1)11(-1).
  2. Replace kk with −1-1: Multiply 1111 by −1-1.\newline11(−1)11(-1) equals −11-11.

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