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SEAMO 2027 - Paper F - SET 09 - Self-study Question 3

SEAMO · SEAMO 2027 - Paper F - SET 09 - Self-study

Question 3

Find the number of real roots of $|x^4-4x^2|=4$.
  1. 0
  2. 1
  3. 2
  4. 3
  5. 4