Modded SAT Question Bank
by Abdullah Mallik dedicated to DPT SAT Batches and Someone Special | GitHub
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Test
Math
Domain
Advanced Math
Skill
Nonlinear equations in one variable and systems of equations in two variables
Difficulty
Easy
ID: eb268057
Modded SAT Question Bank by Abdullah Mallik

x squared, equals 64

Which of the following values of x satisfies the given equation?

  1. negative 8

  2. 4

  3. 32

  4. 128

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Correct Answer: A
Rationale

Choice A is correct. Solving for x by taking the square root of both sides of the given equation yields x equals 8 or x equals negative 8. Of the choices given, negative 8 satisfies the given equation.

Choice B is incorrect and may result from a calculation error when solving for x. Choice C is incorrect and may result from dividing 64 by 2 instead of taking the square root. Choice D is incorrect and may result from multiplying 64 by 2 instead of taking the square root.

Question Difficulty: Easy
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