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MathNet 2022-part-01 — 197 problems (EN–VI) Question 145

Math Olympiad Vault · MathNet 2022-part-01 — 197 problems (EN–VI)

Question 145

Consider the equation $(x^2 - 8x + 7)^2 + (3m - 1)(x^2 - 8x + 7) + 2m^2 - m = 0$, where $m$ is a real parameter.

a) Find the number of solutions of the equation for $m = 6$.

b) Find the values of $m$ for which the equation has exactly three distinct real roots.