If , which of the following is a possible value of x ?

Question

Accepted Answer

Choice D is correct. If , then taking the square root of each side of the equation gives or . Solving these equations for x gives or . Of these, is the only solution given as a choice. Choice A is incorrect and may result from solving the equation and making a sign error. Choice B is incorrect and may result from solving the equation . Choice C is incorrect and may result from finding a possible value of .

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