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2011 AMC 10B Question 19

AMC10 · 2011 AMC 10B

Question 19

What is the product of all the roots of the equation below? $$
\sqrt{5 | x | + 8} = \sqrt{x^2 - 16}
$$
  1. $-64 $
  2. $-24 $
  3. $-9 $
  4. $24 $
  5. $576 $