k 2 - 53 = 91 What is the positive solution to the given equation?

Question

Accepted Answer

Choice D is correct. Adding 53 to each side of the given equation yields k 2 = 144 . Taking the square root of each side of this equation yields k = &#177; 12 . Therefore, the positive solution to the given equation is 12 . Choice A is incorrect. This is the positive solution to the equation k 2 - 53 = 20,683 , not k 2 - 53 = 91 . Choice B is incorrect. This is the positive solution to the equation k 2 - 53 = 5,131 , not k 2 - 53 = 91 . Choice C is incorrect. This is the positive solution to the equation k 2 - 53 = 1,391 , not k 2 - 53 = 91 .

Question k-2-53