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United States competition problems

Algebra Difficulty 5.0 AIME, harder Prove it United States

Problem:
Find all the values of mm for which the zeros of 2x2−mx−82x^{2} - m x - 8 differ by m−1m-1.

Solution

Solution:
6, −103-\frac{10}{3}.

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Source: MathNet, licensed CC-BY-4.0. Statement reproduced verbatim; metadata (topic, difficulty) added by this project.