Russian Math Olympiad Problems And Solutions - Pdf Verified _top_

(From the 2010 Russian Math Olympiad, Grade 10)

Let $f(x) = x^2 + 4x + 2$. Find all $x$ such that $f(f(x)) = 2$. russian math olympiad problems and solutions pdf verified

(From the 2001 Russian Math Olympiad, Grade 11) (From the 2010 Russian Math Olympiad, Grade 10)