Question 129
Solve the equation
$$
(x + 1)\sqrt{x^2 + 2x + 2} + x\sqrt{x^2 + 1} = 0.
$$
$$
(x + 1)\sqrt{x^2 + 2x + 2} + x\sqrt{x^2 + 1} = 0.
$$
MathNet 2023-part-01 — 191 problems (EN–VI) Question 129
Math Olympiad Vault · MathNet 2023-part-01 — 191 problems (EN–VI)