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18. Solve log(x-1) + log(x + 1) = 0 a. x = √2 b. x = -1, x = 1 c. x=1 d. x = -√√2, x = √2 e. x = 2
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18. Solve log(x-1) + log(x + 1) = 0 a. x = √2 b. x = -1, x = 1 c. x=1 d. x = -√√2, x = √2 e. x = 2
18. Solve log(x-1) + log(x + 1) = 0 a. x = √2 b. x = -1, x = 1 c. x=1 d. x = -√√2, x = √2 e. x = 2