If , which of the following expressions is equivalent to ?
A
B
C
D
Correct answer: D
Explanation
Choice D is correct. Taking the square root of an exponential expression halves the exponent, so , which further reduces to . This can be rewritten as .
Choice A is incorrect and may result from neglecting the denominator of the given expression and from incorrectly calculating the square root of 16. Choice B is incorrect and may result from rewriting as rather than . Choice C is incorrect and may result from taking the square root of the variables in the numerator twice instead of once.
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id cb_question_bank:3e785172-08ab-46ec-840e-16cb83c67899 · question 463eec13 · IBN 026581-DC
· JSON