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1954 AMC 12 Question 1

AMC12 · 1954 AMC 12

Question 1

The square of $5-\sqrt{y^2-25}$ is:
  1. $y^2-5\sqrt{y^2-25}$
  2. $-y^2$
  3. $y^2$
  4. $(5-y)^2$
  5. $y^2-10\sqrt{y^2-25}$