Question 1
Find all $x$ that satisfy
$$
\log_2(x^2 + 4) - \log_2 x + x^2 - 4x + 2 = 0.
$$
$$
\log_2(x^2 + 4) - \log_2 x + x^2 - 4x + 2 = 0.
$$
MathNet 2018-part-05 — 181 problems (EN–VI) Question 1
Math Olympiad Vault · MathNet 2018-part-05 — 181 problems (EN–VI)