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SEAMO 2027 - Paper F - SET 06 - Self-study Question 7

SEAMO · SEAMO 2027 - Paper F - SET 06 - Self-study

Question 7

Let $f(x)=x^2+2020x+20$. How many ordered pairs of positive integers $(m,n)$ satisfy $f(m+n)=f(m)+f(n)$?
  1. 1
  2. 2
  3. 3
  4. 4
  5. None of the above